Home / 15,418.84-21,282.11-8,708.40

Finding the Fourth Proportional to 15,418.84, 21,282.11 and 8,708.40

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Solution

The fourth proportional to 15,418.84, 21,282.11 and 8,708.40 is: 12,019.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,418.84 : 21,282.11 = 8,708.40 : x
  2. Step 2: Convert to fraction form
    15,418.84/21,282.11 = 8,708.40/x
  3. Step 3: Cross multiply
    15,418.84x = 21,282.11 × 8,708.40
  4. Step 4: Simplify right side
    15,418.84x = 185,333,126.72
  5. Step 5: Solve for x
    x = 185,333,126.72/15,418.84
  6. Step 6: Final answer
    x = 12,019.91

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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.