Home / 15,451.59-21,323.35-8,378.17

Finding the Fourth Proportional to 15,451.59, 21,323.35 and 8,378.17

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Solution

The fourth proportional to 15,451.59, 21,323.35 and 8,378.17 is: 11,561.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,451.59 : 21,323.35 = 8,378.17 : x
  2. Step 2: Convert to fraction form
    15,451.59/21,323.35 = 8,378.17/x
  3. Step 3: Cross multiply
    15,451.59x = 21,323.35 × 8,378.17
  4. Step 4: Simplify right side
    15,451.59x = 178,650,608.43
  5. Step 5: Solve for x
    x = 178,650,608.43/15,451.59
  6. Step 6: Final answer
    x = 11,561.95

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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.