Home / 15,253.20-21,049.56-8,880.12

Finding the Fourth Proportional to 15,253.20, 21,049.56 and 8,880.12

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Solution

The fourth proportional to 15,253.20, 21,049.56 and 8,880.12 is: 12,254.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,253.20 : 21,049.56 = 8,880.12 : x
  2. Step 2: Convert to fraction form
    15,253.20/21,049.56 = 8,880.12/x
  3. Step 3: Cross multiply
    15,253.20x = 21,049.56 × 8,880.12
  4. Step 4: Simplify right side
    15,253.20x = 186,922,618.75
  5. Step 5: Solve for x
    x = 186,922,618.75/15,253.20
  6. Step 6: Final answer
    x = 12,254.65

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Double scale
Find fourth proportional to 15,254.20, 21,050.94 and 8,881.12
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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.