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Finding the Fourth Proportional to 29,407.68, 40,572.72 and 19,959.84

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Solution

The fourth proportional to 29,407.68, 40,572.72 and 19,959.84 is: 27,537.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,407.68 : 40,572.72 = 19,959.84 : x
  2. Step 2: Convert to fraction form
    29,407.68/40,572.72 = 19,959.84/x
  3. Step 3: Cross multiply
    29,407.68x = 40,572.72 × 19,959.84
  4. Step 4: Simplify right side
    29,407.68x = 809,824,999.56
  5. Step 5: Solve for x
    x = 809,824,999.56/29,407.68
  6. Step 6: Final answer
    x = 27,537.87

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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.