Home / 20,714.55-28,386.89-18,721.59

Finding the Fourth Proportional to 20,714.55, 28,386.89 and 18,721.59

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Solution

The fourth proportional to 20,714.55, 28,386.89 and 18,721.59 is: 25,655.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,714.55 : 28,386.89 = 18,721.59 : x
  2. Step 2: Convert to fraction form
    20,714.55/28,386.89 = 18,721.59/x
  3. Step 3: Cross multiply
    20,714.55x = 28,386.89 × 18,721.59
  4. Step 4: Simplify right side
    20,714.55x = 531,447,622.35
  5. Step 5: Solve for x
    x = 531,447,622.35/20,714.55
  6. Step 6: Final answer
    x = 25,655.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.