Home / 28,403.76-39,196.98-15,656.52

Finding the Fourth Proportional to 28,403.76, 39,196.98 and 15,656.52

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Solution

The fourth proportional to 28,403.76, 39,196.98 and 15,656.52 is: 21,605.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,403.76 : 39,196.98 = 15,656.52 : x
  2. Step 2: Convert to fraction form
    28,403.76/39,196.98 = 15,656.52/x
  3. Step 3: Cross multiply
    28,403.76x = 39,196.98 × 15,656.52
  4. Step 4: Simplify right side
    28,403.76x = 613,688,301.31
  5. Step 5: Solve for x
    x = 613,688,301.31/28,403.76
  6. Step 6: Final answer
    x = 21,605.88

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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.