Home / 32,688.18-45,108.36-18,540.72

Finding the Fourth Proportional to 32,688.18, 45,108.36 and 18,540.72

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Solution

The fourth proportional to 32,688.18, 45,108.36 and 18,540.72 is: 25,585.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,688.18 : 45,108.36 = 18,540.72 : x
  2. Step 2: Convert to fraction form
    32,688.18/45,108.36 = 18,540.72/x
  3. Step 3: Cross multiply
    32,688.18x = 45,108.36 × 18,540.72
  4. Step 4: Simplify right side
    32,688.18x = 836,341,472.42
  5. Step 5: Solve for x
    x = 836,341,472.42/32,688.18
  6. Step 6: Final answer
    x = 25,585.44

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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.