Home / 13,925.98-19,221.20-7,961.14

Finding the Fourth Proportional to 13,925.98, 19,221.20 and 7,961.14

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Solution

The fourth proportional to 13,925.98, 19,221.20 and 7,961.14 is: 10,988.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,925.98 : 19,221.20 = 7,961.14 : x
  2. Step 2: Convert to fraction form
    13,925.98/19,221.20 = 7,961.14/x
  3. Step 3: Cross multiply
    13,925.98x = 19,221.20 × 7,961.14
  4. Step 4: Simplify right side
    13,925.98x = 153,022,664.17
  5. Step 5: Solve for x
    x = 153,022,664.17/13,925.98
  6. Step 6: Final answer
    x = 10,988.29

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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.