Home / 30,519.14-42,114.51-17,088.12

Finding the Fourth Proportional to 30,519.14, 42,114.51 and 17,088.12

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Solution

The fourth proportional to 30,519.14, 42,114.51 and 17,088.12 is: 23,580.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,519.14 : 42,114.51 = 17,088.12 : x
  2. Step 2: Convert to fraction form
    30,519.14/42,114.51 = 17,088.12/x
  3. Step 3: Cross multiply
    30,519.14x = 42,114.51 × 17,088.12
  4. Step 4: Simplify right side
    30,519.14x = 719,657,800.62
  5. Step 5: Solve for x
    x = 719,657,800.62/30,519.14
  6. Step 6: Final answer
    x = 23,580.54

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Half scale
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Double scale
Find fourth proportional to 30,520.14, 42,115.89 and 17,089.12
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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.