Home / 10,938-15,094.16-6,690.72

Finding the Fourth Proportional to 10,938, 15,094.16 and 6,690.72

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Solution

The fourth proportional to 10,938, 15,094.16 and 6,690.72 is: 9,233.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,938 : 15,094.16 = 6,690.72 : x
  2. Step 2: Convert to fraction form
    10,938/15,094.16 = 6,690.72/x
  3. Step 3: Cross multiply
    10,938x = 15,094.16 × 6,690.72
  4. Step 4: Simplify right side
    10,938x = 100,990,798.20
  5. Step 5: Solve for x
    x = 100,990,798.20/10,938
  6. Step 6: Final answer
    x = 9,233.02

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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.