Home / 15,909.99-21,955.19-8,836.87

Finding the Fourth Proportional to 15,909.99, 21,955.19 and 8,836.87

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Solution

The fourth proportional to 15,909.99, 21,955.19 and 8,836.87 is: 12,194.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,909.99 : 21,955.19 = 8,836.87 : x
  2. Step 2: Convert to fraction form
    15,909.99/21,955.19 = 8,836.87/x
  3. Step 3: Cross multiply
    15,909.99x = 21,955.19 × 8,836.87
  4. Step 4: Simplify right side
    15,909.99x = 194,015,159.86
  5. Step 5: Solve for x
    x = 194,015,159.86/15,909.99
  6. Step 6: Final answer
    x = 12,194.55

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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.