Home / 38,988.54-58,488.89-12,687.10

Finding the Fourth Proportional to 38,988.54, 58,488.89 and 12,687.10

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Solution

The fourth proportional to 38,988.54, 58,488.89 and 12,687.10 is: 19,032.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,988.54 : 58,488.89 = 12,687.10 : x
  2. Step 2: Convert to fraction form
    38,988.54/58,488.89 = 12,687.10/x
  3. Step 3: Cross multiply
    38,988.54x = 58,488.89 × 12,687.10
  4. Step 4: Simplify right side
    38,988.54x = 742,054,186.66
  5. Step 5: Solve for x
    x = 742,054,186.66/38,988.54
  6. Step 6: Final answer
    x = 19,032.62

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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.