Home / 15,316.20-21,133.17-9,025.20

Finding the Fourth Proportional to 15,316.20, 21,133.17 and 9,025.20

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Solution

The fourth proportional to 15,316.20, 21,133.17 and 9,025.20 is: 12,452.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,316.20 : 21,133.17 = 9,025.20 : x
  2. Step 2: Convert to fraction form
    15,316.20/21,133.17 = 9,025.20/x
  3. Step 3: Cross multiply
    15,316.20x = 21,133.17 × 9,025.20
  4. Step 4: Simplify right side
    15,316.20x = 190,731,085.88
  5. Step 5: Solve for x
    x = 190,731,085.88/15,316.20
  6. Step 6: Final answer
    x = 12,452.90

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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.