Home / 15,301.67-21,116.10-8,587.43

Finding the Fourth Proportional to 15,301.67, 21,116.10 and 8,587.43

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Solution

The fourth proportional to 15,301.67, 21,116.10 and 8,587.43 is: 11,850.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,301.67 : 21,116.10 = 8,587.43 : x
  2. Step 2: Convert to fraction form
    15,301.67/21,116.10 = 8,587.43/x
  3. Step 3: Cross multiply
    15,301.67x = 21,116.10 × 8,587.43
  4. Step 4: Simplify right side
    15,301.67x = 181,333,030.62
  5. Step 5: Solve for x
    x = 181,333,030.62/15,301.67
  6. Step 6: Final answer
    x = 11,850.54

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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.