Home / 18,989.12-28,475.48-6,510.36

Finding the Fourth Proportional to 18,989.12, 28,475.48 and 6,510.36

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Solution

The fourth proportional to 18,989.12, 28,475.48 and 6,510.36 is: 9,762.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,989.12 : 28,475.48 = 6,510.36 : x
  2. Step 2: Convert to fraction form
    18,989.12/28,475.48 = 6,510.36/x
  3. Step 3: Cross multiply
    18,989.12x = 28,475.48 × 6,510.36
  4. Step 4: Simplify right side
    18,989.12x = 185,385,593.42
  5. Step 5: Solve for x
    x = 185,385,593.42/18,989.12
  6. Step 6: Final answer
    x = 9,762.73

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.