Home / 10,938.76-15,108.08-7,967.88

Finding the Fourth Proportional to 10,938.76, 15,108.08 and 7,967.88

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Solution

The fourth proportional to 10,938.76, 15,108.08 and 7,967.88 is: 11,004.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,938.76 : 15,108.08 = 7,967.88 : x
  2. Step 2: Convert to fraction form
    10,938.76/15,108.08 = 7,967.88/x
  3. Step 3: Cross multiply
    10,938.76x = 15,108.08 × 7,967.88
  4. Step 4: Simplify right side
    10,938.76x = 120,379,368.47
  5. Step 5: Solve for x
    x = 120,379,368.47/10,938.76
  6. Step 6: Final answer
    x = 11,004.85

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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.