Home / 9,030.18-12,480.21-8,140.80

Finding the Fourth Proportional to 9,030.18, 12,480.21 and 8,140.80

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Solution

The fourth proportional to 9,030.18, 12,480.21 and 8,140.80 is: 11,251.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,030.18 : 12,480.21 = 8,140.80 : x
  2. Step 2: Convert to fraction form
    9,030.18/12,480.21 = 8,140.80/x
  3. Step 3: Cross multiply
    9,030.18x = 12,480.21 × 8,140.80
  4. Step 4: Simplify right side
    9,030.18x = 101,598,893.57
  5. Step 5: Solve for x
    x = 101,598,893.57/9,030.18
  6. Step 6: Final answer
    x = 11,251.04

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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.