Home / 28,620.86-39,499.08-15,875.30

Finding the Fourth Proportional to 28,620.86, 39,499.08 and 15,875.30

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Solution

The fourth proportional to 28,620.86, 39,499.08 and 15,875.30 is: 21,909.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,620.86 : 39,499.08 = 15,875.30 : x
  2. Step 2: Convert to fraction form
    28,620.86/39,499.08 = 15,875.30/x
  3. Step 3: Cross multiply
    28,620.86x = 39,499.08 × 15,875.30
  4. Step 4: Simplify right side
    28,620.86x = 627,059,744.72
  5. Step 5: Solve for x
    x = 627,059,744.72/28,620.86
  6. Step 6: Final answer
    x = 21,909.19

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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.