Home / 15,543.53-21,450.05-8,469.95

Finding the Fourth Proportional to 15,543.53, 21,450.05 and 8,469.95

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Solution

The fourth proportional to 15,543.53, 21,450.05 and 8,469.95 is: 11,688.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,543.53 : 21,450.05 = 8,469.95 : x
  2. Step 2: Convert to fraction form
    15,543.53/21,450.05 = 8,469.95/x
  3. Step 3: Cross multiply
    15,543.53x = 21,450.05 × 8,469.95
  4. Step 4: Simplify right side
    15,543.53x = 181,680,701.40
  5. Step 5: Solve for x
    x = 181,680,701.40/15,543.53
  6. Step 6: Final answer
    x = 11,688.51

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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.