Home / 20,387.96-28,092.24-18,985.44

Finding the Fourth Proportional to 20,387.96, 28,092.24 and 18,985.44

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Solution

The fourth proportional to 20,387.96, 28,092.24 and 18,985.44 is: 26,159.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,387.96 : 28,092.24 = 18,985.44 : x
  2. Step 2: Convert to fraction form
    20,387.96/28,092.24 = 18,985.44/x
  3. Step 3: Cross multiply
    20,387.96x = 28,092.24 × 18,985.44
  4. Step 4: Simplify right side
    20,387.96x = 533,343,536.99
  5. Step 5: Solve for x
    x = 533,343,536.99/20,387.96
  6. Step 6: Final answer
    x = 26,159.74

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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.