Home / 29,298.79-40,432.33-15,870

Finding the Fourth Proportional to 29,298.79, 40,432.33 and 15,870

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Solution

The fourth proportional to 29,298.79, 40,432.33 and 15,870 is: 21,900.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,298.79 : 40,432.33 = 15,870 : x
  2. Step 2: Convert to fraction form
    29,298.79/40,432.33 = 15,870/x
  3. Step 3: Cross multiply
    29,298.79x = 40,432.33 × 15,870
  4. Step 4: Simplify right side
    29,298.79x = 641,661,077.10
  5. Step 5: Solve for x
    x = 641,661,077.10/29,298.79
  6. Step 6: Final answer
    x = 21,900.60

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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.