Home / 15,557.42-21,470.51-8,845.15

Finding the Fourth Proportional to 15,557.42, 21,470.51 and 8,845.15

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Solution

The fourth proportional to 15,557.42, 21,470.51 and 8,845.15 is: 12,207.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,557.42 : 21,470.51 = 8,845.15 : x
  2. Step 2: Convert to fraction form
    15,557.42/21,470.51 = 8,845.15/x
  3. Step 3: Cross multiply
    15,557.42x = 21,470.51 × 8,845.15
  4. Step 4: Simplify right side
    15,557.42x = 189,909,729.95
  5. Step 5: Solve for x
    x = 189,909,729.95/15,557.42
  6. Step 6: Final answer
    x = 12,207.02

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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.