Home / 15,006.72-20,707.88-8,291.18

Finding the Fourth Proportional to 15,006.72, 20,707.88 and 8,291.18

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Solution

The fourth proportional to 15,006.72, 20,707.88 and 8,291.18 is: 11,441.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,006.72 : 20,707.88 = 8,291.18 : x
  2. Step 2: Convert to fraction form
    15,006.72/20,707.88 = 8,291.18/x
  3. Step 3: Cross multiply
    15,006.72x = 20,707.88 × 8,291.18
  4. Step 4: Simplify right side
    15,006.72x = 171,692,760.50
  5. Step 5: Solve for x
    x = 171,692,760.50/15,006.72
  6. Step 6: Final answer
    x = 11,441.06

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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.