Home / 12,528.76-17,265.88-8,985.84

Finding the Fourth Proportional to 12,528.76, 17,265.88 and 8,985.84

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Solution

The fourth proportional to 12,528.76, 17,265.88 and 8,985.84 is: 12,383.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,528.76 : 17,265.88 = 8,985.84 : x
  2. Step 2: Convert to fraction form
    12,528.76/17,265.88 = 8,985.84/x
  3. Step 3: Cross multiply
    12,528.76x = 17,265.88 × 8,985.84
  4. Step 4: Simplify right side
    12,528.76x = 155,148,435.14
  5. Step 5: Solve for x
    x = 155,148,435.14/12,528.76
  6. Step 6: Final answer
    x = 12,383.38

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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.