Home / 9,030.40-13,545.60-8,972.80

Finding the Fourth Proportional to 9,030.40, 13,545.60 and 8,972.80

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Solution

The fourth proportional to 9,030.40, 13,545.60 and 8,972.80 is: 13,459.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,030.40 : 13,545.60 = 8,972.80 : x
  2. Step 2: Convert to fraction form
    9,030.40/13,545.60 = 8,972.80/x
  3. Step 3: Cross multiply
    9,030.40x = 13,545.60 × 8,972.80
  4. Step 4: Simplify right side
    9,030.40x = 121,541,959.68
  5. Step 5: Solve for x
    x = 121,541,959.68/9,030.40
  6. Step 6: Final answer
    x = 13,459.20

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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.