Home / 15,543.18-21,440.39-11,000.74

Finding the Fourth Proportional to 15,543.18, 21,440.39 and 11,000.74

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Solution

The fourth proportional to 15,543.18, 21,440.39 and 11,000.74 is: 15,174.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,543.18 : 21,440.39 = 11,000.74 : x
  2. Step 2: Convert to fraction form
    15,543.18/21,440.39 = 11,000.74/x
  3. Step 3: Cross multiply
    15,543.18x = 21,440.39 × 11,000.74
  4. Step 4: Simplify right side
    15,543.18x = 235,860,155.89
  5. Step 5: Solve for x
    x = 235,860,155.89/15,543.18
  6. Step 6: Final answer
    x = 15,174.51

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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.