Home / 39,915.80-59,875.54-13,620.80

Finding the Fourth Proportional to 39,915.80, 59,875.54 and 13,620.80

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Solution

The fourth proportional to 39,915.80, 59,875.54 and 13,620.80 is: 20,431.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,915.80 : 59,875.54 = 13,620.80 : x
  2. Step 2: Convert to fraction form
    39,915.80/59,875.54 = 13,620.80/x
  3. Step 3: Cross multiply
    39,915.80x = 59,875.54 × 13,620.80
  4. Step 4: Simplify right side
    39,915.80x = 815,552,755.23
  5. Step 5: Solve for x
    x = 815,552,755.23/39,915.80
  6. Step 6: Final answer
    x = 20,431.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.