Home / 13,572.18-20,356.12-8,305.36

Finding the Fourth Proportional to 13,572.18, 20,356.12 and 8,305.36

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Solution

The fourth proportional to 13,572.18, 20,356.12 and 8,305.36 is: 12,456.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,572.18 : 20,356.12 = 8,305.36 : x
  2. Step 2: Convert to fraction form
    13,572.18/20,356.12 = 8,305.36/x
  3. Step 3: Cross multiply
    13,572.18x = 20,356.12 × 8,305.36
  4. Step 4: Simplify right side
    13,572.18x = 169,064,904.80
  5. Step 5: Solve for x
    x = 169,064,904.80/13,572.18
  6. Step 6: Final answer
    x = 12,456.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.