Home / 28,503.56-39,337.35-15,930.74

Finding the Fourth Proportional to 28,503.56, 39,337.35 and 15,930.74

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Solution

The fourth proportional to 28,503.56, 39,337.35 and 15,930.74 is: 21,985.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,503.56 : 39,337.35 = 15,930.74 : x
  2. Step 2: Convert to fraction form
    28,503.56/39,337.35 = 15,930.74/x
  3. Step 3: Cross multiply
    28,503.56x = 39,337.35 × 15,930.74
  4. Step 4: Simplify right side
    28,503.56x = 626,673,133.74
  5. Step 5: Solve for x
    x = 626,673,133.74/28,503.56
  6. Step 6: Final answer
    x = 21,985.78

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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.