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Finding the Fourth Proportional to 31,201.70, 46,802.54 and 10,425.20

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Solution

The fourth proportional to 31,201.70, 46,802.54 and 10,425.20 is: 15,637.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,201.70 : 46,802.54 = 10,425.20 : x
  2. Step 2: Convert to fraction form
    31,201.70/46,802.54 = 10,425.20/x
  3. Step 3: Cross multiply
    31,201.70x = 46,802.54 × 10,425.20
  4. Step 4: Simplify right side
    31,201.70x = 487,925,553.87
  5. Step 5: Solve for x
    x = 487,925,553.87/31,201.70
  6. Step 6: Final answer
    x = 15,637.79

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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.