Home / 11,247.12-16,870.68-4,320

Finding the Fourth Proportional to 11,247.12, 16,870.68 and 4,320

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Solution

The fourth proportional to 11,247.12, 16,870.68 and 4,320 is: 6,480.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,247.12 : 16,870.68 = 4,320 : x
  2. Step 2: Convert to fraction form
    11,247.12/16,870.68 = 4,320/x
  3. Step 3: Cross multiply
    11,247.12x = 16,870.68 × 4,320
  4. Step 4: Simplify right side
    11,247.12x = 72,881,337.60
  5. Step 5: Solve for x
    x = 72,881,337.60/11,247.12
  6. Step 6: Final answer
    x = 6,480.00

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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.