Home / 12,256.61-16,911.51-7,218.98

Finding the Fourth Proportional to 12,256.61, 16,911.51 and 7,218.98

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Solution

The fourth proportional to 12,256.61, 16,911.51 and 7,218.98 is: 9,960.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,256.61 : 16,911.51 = 7,218.98 : x
  2. Step 2: Convert to fraction form
    12,256.61/16,911.51 = 7,218.98/x
  3. Step 3: Cross multiply
    12,256.61x = 16,911.51 × 7,218.98
  4. Step 4: Simplify right side
    12,256.61x = 122,083,852.46
  5. Step 5: Solve for x
    x = 122,083,852.46/12,256.61
  6. Step 6: Final answer
    x = 9,960.65

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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.