Home / 12,885.35-17,777.73-7,219.33

Finding the Fourth Proportional to 12,885.35, 17,777.73 and 7,219.33

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Solution

The fourth proportional to 12,885.35, 17,777.73 and 7,219.33 is: 9,960.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,885.35 : 17,777.73 = 7,219.33 : x
  2. Step 2: Convert to fraction form
    12,885.35/17,777.73 = 7,219.33/x
  3. Step 3: Cross multiply
    12,885.35x = 17,777.73 × 7,219.33
  4. Step 4: Simplify right side
    12,885.35x = 128,343,299.52
  5. Step 5: Solve for x
    x = 128,343,299.52/12,885.35
  6. Step 6: Final answer
    x = 9,960.40

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Half scale
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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.