Home / 21,953.07-30,295.76-12,521.43

Finding the Fourth Proportional to 21,953.07, 30,295.76 and 12,521.43

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Solution

The fourth proportional to 21,953.07, 30,295.76 and 12,521.43 is: 17,279.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,953.07 : 30,295.76 = 12,521.43 : x
  2. Step 2: Convert to fraction form
    21,953.07/30,295.76 = 12,521.43/x
  3. Step 3: Cross multiply
    21,953.07x = 30,295.76 × 12,521.43
  4. Step 4: Simplify right side
    21,953.07x = 379,346,175.53
  5. Step 5: Solve for x
    x = 379,346,175.53/21,953.07
  6. Step 6: Final answer
    x = 17,279.87

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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.