Home / 20,566.18-28,381.36-11,134.72

Finding the Fourth Proportional to 20,566.18, 28,381.36 and 11,134.72

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Solution

The fourth proportional to 20,566.18, 28,381.36 and 11,134.72 is: 15,365.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,566.18 : 28,381.36 = 11,134.72 : x
  2. Step 2: Convert to fraction form
    20,566.18/28,381.36 = 11,134.72/x
  3. Step 3: Cross multiply
    20,566.18x = 28,381.36 × 11,134.72
  4. Step 4: Simplify right side
    20,566.18x = 316,018,496.82
  5. Step 5: Solve for x
    x = 316,018,496.82/20,566.18
  6. Step 6: Final answer
    x = 15,365.93

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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.