Home / 13,282.32-18,337.14-8,812.20

Finding the Fourth Proportional to 13,282.32, 18,337.14 and 8,812.20

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Solution

The fourth proportional to 13,282.32, 18,337.14 and 8,812.20 is: 12,165.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,282.32 : 18,337.14 = 8,812.20 : x
  2. Step 2: Convert to fraction form
    13,282.32/18,337.14 = 8,812.20/x
  3. Step 3: Cross multiply
    13,282.32x = 18,337.14 × 8,812.20
  4. Step 4: Simplify right side
    13,282.32x = 161,590,545.11
  5. Step 5: Solve for x
    x = 161,590,545.11/13,282.32
  6. Step 6: Final answer
    x = 12,165.84

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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.