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Finding the Fourth Proportional to 38,750.57, 53,478.88 and 21,755.93

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Solution

The fourth proportional to 38,750.57, 53,478.88 and 21,755.93 is: 30,024.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,750.57 : 53,478.88 = 21,755.93 : x
  2. Step 2: Convert to fraction form
    38,750.57/53,478.88 = 21,755.93/x
  3. Step 3: Cross multiply
    38,750.57x = 53,478.88 × 21,755.93
  4. Step 4: Simplify right side
    38,750.57x = 1,163,482,660.98
  5. Step 5: Solve for x
    x = 1,163,482,660.98/38,750.57
  6. Step 6: Final answer
    x = 30,024.92

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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.