Home / 38,686.47-58,046.10-21,135.81

Finding the Fourth Proportional to 38,686.47, 58,046.10 and 21,135.81

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Solution

The fourth proportional to 38,686.47, 58,046.10 and 21,135.81 is: 31,712.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,686.47 : 58,046.10 = 21,135.81 : x
  2. Step 2: Convert to fraction form
    38,686.47/58,046.10 = 21,135.81/x
  3. Step 3: Cross multiply
    38,686.47x = 58,046.10 × 21,135.81
  4. Step 4: Simplify right side
    38,686.47x = 1,226,851,340.84
  5. Step 5: Solve for x
    x = 1,226,851,340.84/38,686.47
  6. Step 6: Final answer
    x = 31,712.67

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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.