Home / 15,987.88-22,063.71-8,915.68

Finding the Fourth Proportional to 15,987.88, 22,063.71 and 8,915.68

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Solution

The fourth proportional to 15,987.88, 22,063.71 and 8,915.68 is: 12,303.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,987.88 : 22,063.71 = 8,915.68 : x
  2. Step 2: Convert to fraction form
    15,987.88/22,063.71 = 8,915.68/x
  3. Step 3: Cross multiply
    15,987.88x = 22,063.71 × 8,915.68
  4. Step 4: Simplify right side
    15,987.88x = 196,712,977.97
  5. Step 5: Solve for x
    x = 196,712,977.97/15,987.88
  6. Step 6: Final answer
    x = 12,303.88

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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.