Home / 13,100.85-18,079.65-7,132.23

Finding the Fourth Proportional to 13,100.85, 18,079.65 and 7,132.23

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Solution

The fourth proportional to 13,100.85, 18,079.65 and 7,132.23 is: 9,842.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,100.85 : 18,079.65 = 7,132.23 : x
  2. Step 2: Convert to fraction form
    13,100.85/18,079.65 = 7,132.23/x
  3. Step 3: Cross multiply
    13,100.85x = 18,079.65 × 7,132.23
  4. Step 4: Simplify right side
    13,100.85x = 128,948,222.12
  5. Step 5: Solve for x
    x = 128,948,222.12/13,100.85
  6. Step 6: Final answer
    x = 9,842.74

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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.