Home / 11,459.48-15,815.63-6,425.69

Finding the Fourth Proportional to 11,459.48, 15,815.63 and 6,425.69

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Solution

The fourth proportional to 11,459.48, 15,815.63 and 6,425.69 is: 8,868.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,459.48 : 15,815.63 = 6,425.69 : x
  2. Step 2: Convert to fraction form
    11,459.48/15,815.63 = 6,425.69/x
  3. Step 3: Cross multiply
    11,459.48x = 15,815.63 × 6,425.69
  4. Step 4: Simplify right side
    11,459.48x = 101,626,335.53
  5. Step 5: Solve for x
    x = 101,626,335.53/11,459.48
  6. Step 6: Final answer
    x = 8,868.32

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Half scale
Find fourth proportional to 22,918.96, 31,631.26 and 12,851.38
Double scale
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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.