Home / 12,126.84-16,729.11-7,402.92

Finding the Fourth Proportional to 12,126.84, 16,729.11 and 7,402.92

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Solution

The fourth proportional to 12,126.84, 16,729.11 and 7,402.92 is: 10,212.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,126.84 : 16,729.11 = 7,402.92 : x
  2. Step 2: Convert to fraction form
    12,126.84/16,729.11 = 7,402.92/x
  3. Step 3: Cross multiply
    12,126.84x = 16,729.11 × 7,402.92
  4. Step 4: Simplify right side
    12,126.84x = 123,844,263.00
  5. Step 5: Solve for x
    x = 123,844,263.00/12,126.84
  6. Step 6: Final answer
    x = 10,212.41

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Half scale
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Double scale
Find fourth proportional to 12,127.84, 16,730.49 and 7,403.92
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.