Home / 15,016.85-20,722.94-8,302.76

Finding the Fourth Proportional to 15,016.85, 20,722.94 and 8,302.76

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Solution

The fourth proportional to 15,016.85, 20,722.94 and 8,302.76 is: 11,457.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,016.85 : 20,722.94 = 8,302.76 : x
  2. Step 2: Convert to fraction form
    15,016.85/20,722.94 = 8,302.76/x
  3. Step 3: Cross multiply
    15,016.85x = 20,722.94 × 8,302.76
  4. Step 4: Simplify right side
    15,016.85x = 172,057,597.31
  5. Step 5: Solve for x
    x = 172,057,597.31/15,016.85
  6. Step 6: Final answer
    x = 11,457.64

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Half scale
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Double scale
Find fourth proportional to 15,017.85, 20,724.32 and 8,303.76
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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.