Home / 9,108.90-13,663.35-7,140.60

Finding the Fourth Proportional to 9,108.90, 13,663.35 and 7,140.60

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Solution

The fourth proportional to 9,108.90, 13,663.35 and 7,140.60 is: 10,710.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,108.90 : 13,663.35 = 7,140.60 : x
  2. Step 2: Convert to fraction form
    9,108.90/13,663.35 = 7,140.60/x
  3. Step 3: Cross multiply
    9,108.90x = 13,663.35 × 7,140.60
  4. Step 4: Simplify right side
    9,108.90x = 97,564,517.01
  5. Step 5: Solve for x
    x = 97,564,517.01/9,108.90
  6. Step 6: Final answer
    x = 10,710.90

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1.5x scale

Why These Related Problems?

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