Home / 28,149.18-38,851.08-18,090.20

Finding the Fourth Proportional to 28,149.18, 38,851.08 and 18,090.20

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Solution

The fourth proportional to 28,149.18, 38,851.08 and 18,090.20 is: 24,967.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,149.18 : 38,851.08 = 18,090.20 : x
  2. Step 2: Convert to fraction form
    28,149.18/38,851.08 = 18,090.20/x
  3. Step 3: Cross multiply
    28,149.18x = 38,851.08 × 18,090.20
  4. Step 4: Simplify right side
    28,149.18x = 702,823,613.16
  5. Step 5: Solve for x
    x = 702,823,613.16/28,149.18
  6. Step 6: Final answer
    x = 24,967.82

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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.