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Finding the Fourth Proportional to 39,562.80, 54,597.95 and 21,657.80

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Solution

The fourth proportional to 39,562.80, 54,597.95 and 21,657.80 is: 29,888.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,562.80 : 54,597.95 = 21,657.80 : x
  2. Step 2: Convert to fraction form
    39,562.80/54,597.95 = 21,657.80/x
  3. Step 3: Cross multiply
    39,562.80x = 54,597.95 × 21,657.80
  4. Step 4: Simplify right side
    39,562.80x = 1,182,471,283.82
  5. Step 5: Solve for x
    x = 1,182,471,283.82/39,562.80
  6. Step 6: Final answer
    x = 29,888.47

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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.