Home / 38,938.62-58,402.44-12,643.68

Finding the Fourth Proportional to 38,938.62, 58,402.44 and 12,643.68

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Solution

The fourth proportional to 38,938.62, 58,402.44 and 12,643.68 is: 18,963.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,938.62 : 58,402.44 = 12,643.68 : x
  2. Step 2: Convert to fraction form
    38,938.62/58,402.44 = 12,643.68/x
  3. Step 3: Cross multiply
    38,938.62x = 58,402.44 × 12,643.68
  4. Step 4: Simplify right side
    38,938.62x = 738,421,762.58
  5. Step 5: Solve for x
    x = 738,421,762.58/38,938.62
  6. Step 6: Final answer
    x = 18,963.74

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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.