Home / 27,853.85-38,438.48-15,917.62

Finding the Fourth Proportional to 27,853.85, 38,438.48 and 15,917.62

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Solution

The fourth proportional to 27,853.85, 38,438.48 and 15,917.62 is: 21,966.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,853.85 : 38,438.48 = 15,917.62 : x
  2. Step 2: Convert to fraction form
    27,853.85/38,438.48 = 15,917.62/x
  3. Step 3: Cross multiply
    27,853.85x = 38,438.48 × 15,917.62
  4. Step 4: Simplify right side
    27,853.85x = 611,849,118.02
  5. Step 5: Solve for x
    x = 611,849,118.02/27,853.85
  6. Step 6: Final answer
    x = 21,966.41

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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.