Home / 30,531.60-42,136.28-17,102.64

Finding the Fourth Proportional to 30,531.60, 42,136.28 and 17,102.64

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Solution

The fourth proportional to 30,531.60, 42,136.28 and 17,102.64 is: 23,603.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,531.60 : 42,136.28 = 17,102.64 : x
  2. Step 2: Convert to fraction form
    30,531.60/42,136.28 = 17,102.64/x
  3. Step 3: Cross multiply
    30,531.60x = 42,136.28 × 17,102.64
  4. Step 4: Simplify right side
    30,531.60x = 720,641,627.78
  5. Step 5: Solve for x
    x = 720,641,627.78/30,531.60
  6. Step 6: Final answer
    x = 23,603.14

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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.