Home / 15,614.12-21,547.49-8,540.54

Finding the Fourth Proportional to 15,614.12, 21,547.49 and 8,540.54

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Solution

The fourth proportional to 15,614.12, 21,547.49 and 8,540.54 is: 11,785.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,614.12 : 21,547.49 = 8,540.54 : x
  2. Step 2: Convert to fraction form
    15,614.12/21,547.49 = 8,540.54/x
  3. Step 3: Cross multiply
    15,614.12x = 21,547.49 × 8,540.54
  4. Step 4: Simplify right side
    15,614.12x = 184,027,202.67
  5. Step 5: Solve for x
    x = 184,027,202.67/15,614.12
  6. Step 6: Final answer
    x = 11,785.95

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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.