Home / 21,764.27-32,656.39-12,897.18

Finding the Fourth Proportional to 21,764.27, 32,656.39 and 12,897.18

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Solution

The fourth proportional to 21,764.27, 32,656.39 and 12,897.18 is: 19,351.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,764.27 : 32,656.39 = 12,897.18 : x
  2. Step 2: Convert to fraction form
    21,764.27/32,656.39 = 12,897.18/x
  3. Step 3: Cross multiply
    21,764.27x = 32,656.39 × 12,897.18
  4. Step 4: Simplify right side
    21,764.27x = 421,175,307.74
  5. Step 5: Solve for x
    x = 421,175,307.74/21,764.27
  6. Step 6: Final answer
    x = 19,351.68

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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.