Home / 14,653.12-20,217.72-8,686.20

Finding the Fourth Proportional to 14,653.12, 20,217.72 and 8,686.20

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Solution

The fourth proportional to 14,653.12, 20,217.72 and 8,686.20 is: 11,984.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,653.12 : 20,217.72 = 8,686.20 : x
  2. Step 2: Convert to fraction form
    14,653.12/20,217.72 = 8,686.20/x
  3. Step 3: Cross multiply
    14,653.12x = 20,217.72 × 8,686.20
  4. Step 4: Simplify right side
    14,653.12x = 175,615,159.46
  5. Step 5: Solve for x
    x = 175,615,159.46/14,653.12
  6. Step 6: Final answer
    x = 11,984.83

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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.