Home / 10,290.24-15,423.12-9,109.20

Finding the Fourth Proportional to 10,290.24, 15,423.12 and 9,109.20

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Solution

The fourth proportional to 10,290.24, 15,423.12 and 9,109.20 is: 13,652.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,290.24 : 15,423.12 = 9,109.20 : x
  2. Step 2: Convert to fraction form
    10,290.24/15,423.12 = 9,109.20/x
  3. Step 3: Cross multiply
    10,290.24x = 15,423.12 × 9,109.20
  4. Step 4: Simplify right side
    10,290.24x = 140,492,284.70
  5. Step 5: Solve for x
    x = 140,492,284.70/10,290.24
  6. Step 6: Final answer
    x = 13,652.96

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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.