Home / 15,438.67-21,305.22-8,365.08

Finding the Fourth Proportional to 15,438.67, 21,305.22 and 8,365.08

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Solution

The fourth proportional to 15,438.67, 21,305.22 and 8,365.08 is: 11,543.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,438.67 : 21,305.22 = 8,365.08 : x
  2. Step 2: Convert to fraction form
    15,438.67/21,305.22 = 8,365.08/x
  3. Step 3: Cross multiply
    15,438.67x = 21,305.22 × 8,365.08
  4. Step 4: Simplify right side
    15,438.67x = 178,219,869.72
  5. Step 5: Solve for x
    x = 178,219,869.72/15,438.67
  6. Step 6: Final answer
    x = 11,543.73

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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.