Home / 19,431.20-29,125.20-10,672.40

Finding the Fourth Proportional to 19,431.20, 29,125.20 and 10,672.40

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Solution

The fourth proportional to 19,431.20, 29,125.20 and 10,672.40 is: 15,996.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,431.20 : 29,125.20 = 10,672.40 : x
  2. Step 2: Convert to fraction form
    19,431.20/29,125.20 = 10,672.40/x
  3. Step 3: Cross multiply
    19,431.20x = 29,125.20 × 10,672.40
  4. Step 4: Simplify right side
    19,431.20x = 310,835,784.48
  5. Step 5: Solve for x
    x = 310,835,784.48/19,431.20
  6. Step 6: Final answer
    x = 15,996.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.