Home / 31,430.28-47,165.94-11,724.60

Finding the Fourth Proportional to 31,430.28, 47,165.94 and 11,724.60

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Solution

The fourth proportional to 31,430.28, 47,165.94 and 11,724.60 is: 17,594.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,430.28 : 47,165.94 = 11,724.60 : x
  2. Step 2: Convert to fraction form
    31,430.28/47,165.94 = 11,724.60/x
  3. Step 3: Cross multiply
    31,430.28x = 47,165.94 × 11,724.60
  4. Step 4: Simplify right side
    31,430.28x = 553,001,780.12
  5. Step 5: Solve for x
    x = 553,001,780.12/31,430.28
  6. Step 6: Final answer
    x = 17,594.55

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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.