Home / 27,879.16-38,465.76-16,539.20

Finding the Fourth Proportional to 27,879.16, 38,465.76 and 16,539.20

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Solution

The fourth proportional to 27,879.16, 38,465.76 and 16,539.20 is: 22,819.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,879.16 : 38,465.76 = 16,539.20 : x
  2. Step 2: Convert to fraction form
    27,879.16/38,465.76 = 16,539.20/x
  3. Step 3: Cross multiply
    27,879.16x = 38,465.76 × 16,539.20
  4. Step 4: Simplify right side
    27,879.16x = 636,192,897.79
  5. Step 5: Solve for x
    x = 636,192,897.79/27,879.16
  6. Step 6: Final answer
    x = 22,819.66

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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.