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Finding the Fourth Proportional to 15,407.10, 23,110.65 and 7,631.10

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Solution

The fourth proportional to 15,407.10, 23,110.65 and 7,631.10 is: 11,446.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,407.10 : 23,110.65 = 7,631.10 : x
  2. Step 2: Convert to fraction form
    15,407.10/23,110.65 = 7,631.10/x
  3. Step 3: Cross multiply
    15,407.10x = 23,110.65 × 7,631.10
  4. Step 4: Simplify right side
    15,407.10x = 176,359,681.22
  5. Step 5: Solve for x
    x = 176,359,681.22/15,407.10
  6. Step 6: Final answer
    x = 11,446.65

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.