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Finding the Fourth Proportional to 18,113.66, 24,973.46 and 11,728.90

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Solution

The fourth proportional to 18,113.66, 24,973.46 and 11,728.90 is: 16,170.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,113.66 : 24,973.46 = 11,728.90 : x
  2. Step 2: Convert to fraction form
    18,113.66/24,973.46 = 11,728.90/x
  3. Step 3: Cross multiply
    18,113.66x = 24,973.46 × 11,728.90
  4. Step 4: Simplify right side
    18,113.66x = 292,911,214.99
  5. Step 5: Solve for x
    x = 292,911,214.99/18,113.66
  6. Step 6: Final answer
    x = 16,170.74

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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.