Home / 15,346.08-21,177.36-8,540.06

Finding the Fourth Proportional to 15,346.08, 21,177.36 and 8,540.06

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Solution

The fourth proportional to 15,346.08, 21,177.36 and 8,540.06 is: 11,785.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,346.08 : 21,177.36 = 8,540.06 : x
  2. Step 2: Convert to fraction form
    15,346.08/21,177.36 = 8,540.06/x
  3. Step 3: Cross multiply
    15,346.08x = 21,177.36 × 8,540.06
  4. Step 4: Simplify right side
    15,346.08x = 180,855,819.15
  5. Step 5: Solve for x
    x = 180,855,819.15/15,346.08
  6. Step 6: Final answer
    x = 11,785.15

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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.