Home / 27,856.08-38,438.96-15,917.04

Finding the Fourth Proportional to 27,856.08, 38,438.96 and 15,917.04

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Solution

The fourth proportional to 27,856.08, 38,438.96 and 15,917.04 is: 21,964.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,856.08 : 38,438.96 = 15,917.04 : x
  2. Step 2: Convert to fraction form
    27,856.08/38,438.96 = 15,917.04/x
  3. Step 3: Cross multiply
    27,856.08x = 38,438.96 × 15,917.04
  4. Step 4: Simplify right side
    27,856.08x = 611,834,463.88
  5. Step 5: Solve for x
    x = 611,834,463.88/27,856.08
  6. Step 6: Final answer
    x = 21,964.13

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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.