Home / 21,779.22-32,668.71-14,381.91

Finding the Fourth Proportional to 21,779.22, 32,668.71 and 14,381.91

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Solution

The fourth proportional to 21,779.22, 32,668.71 and 14,381.91 is: 21,572.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,779.22 : 32,668.71 = 14,381.91 : x
  2. Step 2: Convert to fraction form
    21,779.22/32,668.71 = 14,381.91/x
  3. Step 3: Cross multiply
    21,779.22x = 32,668.71 × 14,381.91
  4. Step 4: Simplify right side
    21,779.22x = 469,838,447.04
  5. Step 5: Solve for x
    x = 469,838,447.04/21,779.22
  6. Step 6: Final answer
    x = 21,572.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.