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Finding the Fourth Proportional to 10,918.53, 15,077.03 and 10,358.03

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Solution

The fourth proportional to 10,918.53, 15,077.03 and 10,358.03 is: 14,303.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,918.53 : 15,077.03 = 10,358.03 : x
  2. Step 2: Convert to fraction form
    10,918.53/15,077.03 = 10,358.03/x
  3. Step 3: Cross multiply
    10,918.53x = 15,077.03 × 10,358.03
  4. Step 4: Simplify right side
    10,918.53x = 156,168,281.13
  5. Step 5: Solve for x
    x = 156,168,281.13/10,918.53
  6. Step 6: Final answer
    x = 14,303.04

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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.