Home / 31,325.29-47,011.29-12,605.48

Finding the Fourth Proportional to 31,325.29, 47,011.29 and 12,605.48

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Solution

The fourth proportional to 31,325.29, 47,011.29 and 12,605.48 is: 18,917.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,325.29 : 47,011.29 = 12,605.48 : x
  2. Step 2: Convert to fraction form
    31,325.29/47,011.29 = 12,605.48/x
  3. Step 3: Cross multiply
    31,325.29x = 47,011.29 × 12,605.48
  4. Step 4: Simplify right side
    31,325.29x = 592,599,875.87
  5. Step 5: Solve for x
    x = 592,599,875.87/31,325.29
  6. Step 6: Final answer
    x = 18,917.62

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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.