Home / 15,989.72-22,065.60-8,915.96

Finding the Fourth Proportional to 15,989.72, 22,065.60 and 8,915.96

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Solution

The fourth proportional to 15,989.72, 22,065.60 and 8,915.96 is: 12,303.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,989.72 : 22,065.60 = 8,915.96 : x
  2. Step 2: Convert to fraction form
    15,989.72/22,065.60 = 8,915.96/x
  3. Step 3: Cross multiply
    15,989.72x = 22,065.60 × 8,915.96
  4. Step 4: Simplify right side
    15,989.72x = 196,736,006.98
  5. Step 5: Solve for x
    x = 196,736,006.98/15,989.72
  6. Step 6: Final answer
    x = 12,303.91

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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.