Home / 10,938.90-15,089.94-8,281.71

Finding the Fourth Proportional to 10,938.90, 15,089.94 and 8,281.71

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Solution

The fourth proportional to 10,938.90, 15,089.94 and 8,281.71 is: 11,424.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,938.90 : 15,089.94 = 8,281.71 : x
  2. Step 2: Convert to fraction form
    10,938.90/15,089.94 = 8,281.71/x
  3. Step 3: Cross multiply
    10,938.90x = 15,089.94 × 8,281.71
  4. Step 4: Simplify right side
    10,938.90x = 124,970,507.00
  5. Step 5: Solve for x
    x = 124,970,507.00/10,938.90
  6. Step 6: Final answer
    x = 11,424.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.