Home / 15,828.96-21,867.12-12,493.92

Finding the Fourth Proportional to 15,828.96, 21,867.12 and 12,493.92

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Solution

The fourth proportional to 15,828.96, 21,867.12 and 12,493.92 is: 17,259.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,828.96 : 21,867.12 = 12,493.92 : x
  2. Step 2: Convert to fraction form
    15,828.96/21,867.12 = 12,493.92/x
  3. Step 3: Cross multiply
    15,828.96x = 21,867.12 × 12,493.92
  4. Step 4: Simplify right side
    15,828.96x = 273,206,047.91
  5. Step 5: Solve for x
    x = 273,206,047.91/15,828.96
  6. Step 6: Final answer
    x = 17,259.89

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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.