Home / 28,000.59-38,638.98-15,425.34

Finding the Fourth Proportional to 28,000.59, 38,638.98 and 15,425.34

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Solution

The fourth proportional to 28,000.59, 38,638.98 and 15,425.34 is: 21,285.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,000.59 : 38,638.98 = 15,425.34 : x
  2. Step 2: Convert to fraction form
    28,000.59/38,638.98 = 15,425.34/x
  3. Step 3: Cross multiply
    28,000.59x = 38,638.98 × 15,425.34
  4. Step 4: Simplify right side
    28,000.59x = 596,019,403.75
  5. Step 5: Solve for x
    x = 596,019,403.75/28,000.59
  6. Step 6: Final answer
    x = 21,285.96

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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.