Home / 13,459.32-20,166.76-7,821.16

Finding the Fourth Proportional to 13,459.32, 20,166.76 and 7,821.16

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Solution

The fourth proportional to 13,459.32, 20,166.76 and 7,821.16 is: 11,718.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,459.32 : 20,166.76 = 7,821.16 : x
  2. Step 2: Convert to fraction form
    13,459.32/20,166.76 = 7,821.16/x
  3. Step 3: Cross multiply
    13,459.32x = 20,166.76 × 7,821.16
  4. Step 4: Simplify right side
    13,459.32x = 157,727,456.64
  5. Step 5: Solve for x
    x = 157,727,456.64/13,459.32
  6. Step 6: Final answer
    x = 11,718.83

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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.