Home / 15,218.02-21,002.95-8,757.52

Finding the Fourth Proportional to 15,218.02, 21,002.95 and 8,757.52

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Solution

The fourth proportional to 15,218.02, 21,002.95 and 8,757.52 is: 12,086.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,218.02 : 21,002.95 = 8,757.52 : x
  2. Step 2: Convert to fraction form
    15,218.02/21,002.95 = 8,757.52/x
  3. Step 3: Cross multiply
    15,218.02x = 21,002.95 × 8,757.52
  4. Step 4: Simplify right side
    15,218.02x = 183,933,867.38
  5. Step 5: Solve for x
    x = 183,933,867.38/15,218.02
  6. Step 6: Final answer
    x = 12,086.58

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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.