Home / 27,690.18-38,199.16-20,124.78

Finding the Fourth Proportional to 27,690.18, 38,199.16 and 20,124.78

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Solution

The fourth proportional to 27,690.18, 38,199.16 and 20,124.78 is: 27,762.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,690.18 : 38,199.16 = 20,124.78 : x
  2. Step 2: Convert to fraction form
    27,690.18/38,199.16 = 20,124.78/x
  3. Step 3: Cross multiply
    27,690.18x = 38,199.16 × 20,124.78
  4. Step 4: Simplify right side
    27,690.18x = 768,749,691.18
  5. Step 5: Solve for x
    x = 768,749,691.18/27,690.18
  6. Step 6: Final answer
    x = 27,762.54

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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.