Home / 14,931.20-20,605.12-8,216.66

Finding the Fourth Proportional to 14,931.20, 20,605.12 and 8,216.66

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Solution

The fourth proportional to 14,931.20, 20,605.12 and 8,216.66 is: 11,339.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,931.20 : 20,605.12 = 8,216.66 : x
  2. Step 2: Convert to fraction form
    14,931.20/20,605.12 = 8,216.66/x
  3. Step 3: Cross multiply
    14,931.20x = 20,605.12 × 8,216.66
  4. Step 4: Simplify right side
    14,931.20x = 169,305,265.30
  5. Step 5: Solve for x
    x = 169,305,265.30/14,931.20
  6. Step 6: Final answer
    x = 11,339.03

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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.