Home / 29,299.10-40,432.52-15,870.20

Finding the Fourth Proportional to 29,299.10, 40,432.52 and 15,870.20

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Solution

The fourth proportional to 29,299.10, 40,432.52 and 15,870.20 is: 21,900.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,299.10 : 40,432.52 = 15,870.20 : x
  2. Step 2: Convert to fraction form
    29,299.10/40,432.52 = 15,870.20/x
  3. Step 3: Cross multiply
    29,299.10x = 40,432.52 × 15,870.20
  4. Step 4: Simplify right side
    29,299.10x = 641,672,016.42
  5. Step 5: Solve for x
    x = 641,672,016.42/29,299.10
  6. Step 6: Final answer
    x = 21,900.75

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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.