Home / 15,045.28-20,762.23-8,330.76

Finding the Fourth Proportional to 15,045.28, 20,762.23 and 8,330.76

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Solution

The fourth proportional to 15,045.28, 20,762.23 and 8,330.76 is: 11,496.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,045.28 : 20,762.23 = 8,330.76 : x
  2. Step 2: Convert to fraction form
    15,045.28/20,762.23 = 8,330.76/x
  3. Step 3: Cross multiply
    15,045.28x = 20,762.23 × 8,330.76
  4. Step 4: Simplify right side
    15,045.28x = 172,965,122.71
  5. Step 5: Solve for x
    x = 172,965,122.71/15,045.28
  6. Step 6: Final answer
    x = 11,496.31

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Half scale
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Double scale
Find fourth proportional to 15,046.28, 20,763.61 and 8,331.76
Similar ratio
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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.