Home / 15,934.94-21,987.63-8,861.18

Finding the Fourth Proportional to 15,934.94, 21,987.63 and 8,861.18

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Solution

The fourth proportional to 15,934.94, 21,987.63 and 8,861.18 is: 12,226.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,934.94 : 21,987.63 = 8,861.18 : x
  2. Step 2: Convert to fraction form
    15,934.94/21,987.63 = 8,861.18/x
  3. Step 3: Cross multiply
    15,934.94x = 21,987.63 × 8,861.18
  4. Step 4: Simplify right side
    15,934.94x = 194,836,347.20
  5. Step 5: Solve for x
    x = 194,836,347.20/15,934.94
  6. Step 6: Final answer
    x = 12,226.99

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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.