Home / 31,468.80-47,203.32-12,749.18

Finding the Fourth Proportional to 31,468.80, 47,203.32 and 12,749.18

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Solution

The fourth proportional to 31,468.80, 47,203.32 and 12,749.18 is: 19,123.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,468.80 : 47,203.32 = 12,749.18 : x
  2. Step 2: Convert to fraction form
    31,468.80/47,203.32 = 12,749.18/x
  3. Step 3: Cross multiply
    31,468.80x = 47,203.32 × 12,749.18
  4. Step 4: Simplify right side
    31,468.80x = 601,803,623.28
  5. Step 5: Solve for x
    x = 601,803,623.28/31,468.80
  6. Step 6: Final answer
    x = 19,123.82

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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.