Home / 15,540.30-21,447.45-8,828.01

Finding the Fourth Proportional to 15,540.30, 21,447.45 and 8,828.01

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Solution

The fourth proportional to 15,540.30, 21,447.45 and 8,828.01 is: 12,183.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,540.30 : 21,447.45 = 8,828.01 : x
  2. Step 2: Convert to fraction form
    15,540.30/21,447.45 = 8,828.01/x
  3. Step 3: Cross multiply
    15,540.30x = 21,447.45 × 8,828.01
  4. Step 4: Simplify right side
    15,540.30x = 189,338,303.07
  5. Step 5: Solve for x
    x = 189,338,303.07/15,540.30
  6. Step 6: Final answer
    x = 12,183.70

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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.