Home / 14,670.72-20,243.52-8,381.76

Finding the Fourth Proportional to 14,670.72, 20,243.52 and 8,381.76

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Solution

The fourth proportional to 14,670.72, 20,243.52 and 8,381.76 is: 11,565.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,670.72 : 20,243.52 = 8,381.76 : x
  2. Step 2: Convert to fraction form
    14,670.72/20,243.52 = 8,381.76/x
  3. Step 3: Cross multiply
    14,670.72x = 20,243.52 × 8,381.76
  4. Step 4: Simplify right side
    14,670.72x = 169,676,326.20
  5. Step 5: Solve for x
    x = 169,676,326.20/14,670.72
  6. Step 6: Final answer
    x = 11,565.64

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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.