Home / 28,699.08-39,602.80-15,951.43

Finding the Fourth Proportional to 28,699.08, 39,602.80 and 15,951.43

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Solution

The fourth proportional to 28,699.08, 39,602.80 and 15,951.43 is: 22,011.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,699.08 : 39,602.80 = 15,951.43 : x
  2. Step 2: Convert to fraction form
    28,699.08/39,602.80 = 15,951.43/x
  3. Step 3: Cross multiply
    28,699.08x = 39,602.80 × 15,951.43
  4. Step 4: Simplify right side
    28,699.08x = 631,721,292.00
  5. Step 5: Solve for x
    x = 631,721,292.00/28,699.08
  6. Step 6: Final answer
    x = 22,011.90

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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.