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Finding the Fourth Proportional to 29,015.59, 39,780.74 and 28,490.71

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Solution

The fourth proportional to 29,015.59, 39,780.74 and 28,490.71 is: 39,061.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,015.59 : 39,780.74 = 28,490.71 : x
  2. Step 2: Convert to fraction form
    29,015.59/39,780.74 = 28,490.71/x
  3. Step 3: Cross multiply
    29,015.59x = 39,780.74 × 28,490.71
  4. Step 4: Simplify right side
    29,015.59x = 1,133,381,185.57
  5. Step 5: Solve for x
    x = 1,133,381,185.57/29,015.59
  6. Step 6: Final answer
    x = 39,061.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.