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Finding the Fourth Proportional to 29,298.51, 40,432.01 and 15,869.72

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Solution

The fourth proportional to 29,298.51, 40,432.01 and 15,869.72 is: 21,900.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,298.51 : 40,432.01 = 15,869.72 : x
  2. Step 2: Convert to fraction form
    29,298.51/40,432.01 = 15,869.72/x
  3. Step 3: Cross multiply
    29,298.51x = 40,432.01 × 15,869.72
  4. Step 4: Simplify right side
    29,298.51x = 641,644,788.74
  5. Step 5: Solve for x
    x = 641,644,788.74/29,298.51
  6. Step 6: Final answer
    x = 21,900.25

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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.