Home / 13,927.68-19,220.60-7,960.32

Finding the Fourth Proportional to 13,927.68, 19,220.60 and 7,960.32

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Solution

The fourth proportional to 13,927.68, 19,220.60 and 7,960.32 is: 10,985.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,927.68 : 19,220.60 = 7,960.32 : x
  2. Step 2: Convert to fraction form
    13,927.68/19,220.60 = 7,960.32/x
  3. Step 3: Cross multiply
    13,927.68x = 19,220.60 × 7,960.32
  4. Step 4: Simplify right side
    13,927.68x = 153,002,126.59
  5. Step 5: Solve for x
    x = 153,002,126.59/13,927.68
  6. Step 6: Final answer
    x = 10,985.47

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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.