Home / 15,814.18-21,779.13-15,469.72

Finding the Fourth Proportional to 15,814.18, 21,779.13 and 15,469.72

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Solution

The fourth proportional to 15,814.18, 21,779.13 and 15,469.72 is: 21,304.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,814.18 : 21,779.13 = 15,469.72 : x
  2. Step 2: Convert to fraction form
    15,814.18/21,779.13 = 15,469.72/x
  3. Step 3: Cross multiply
    15,814.18x = 21,779.13 × 15,469.72
  4. Step 4: Simplify right side
    15,814.18x = 336,917,042.94
  5. Step 5: Solve for x
    x = 336,917,042.94/15,814.18
  6. Step 6: Final answer
    x = 21,304.74

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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.