Home / 30,531.36-42,136.38-17,611.12

Finding the Fourth Proportional to 30,531.36, 42,136.38 and 17,611.12

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Solution

The fourth proportional to 30,531.36, 42,136.38 and 17,611.12 is: 24,305.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,531.36 : 42,136.38 = 17,611.12 : x
  2. Step 2: Convert to fraction form
    30,531.36/42,136.38 = 17,611.12/x
  3. Step 3: Cross multiply
    30,531.36x = 42,136.38 × 17,611.12
  4. Step 4: Simplify right side
    30,531.36x = 742,068,847.68
  5. Step 5: Solve for x
    x = 742,068,847.68/30,531.36
  6. Step 6: Final answer
    x = 24,305.14

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Half scale
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Double scale
Find fourth proportional to 30,532.36, 42,137.76 and 17,612.12
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.