Home / 13,997.56-19,315.90-7,708.76

Finding the Fourth Proportional to 13,997.56, 19,315.90 and 7,708.76

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Solution

The fourth proportional to 13,997.56, 19,315.90 and 7,708.76 is: 10,637.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,997.56 : 19,315.90 = 7,708.76 : x
  2. Step 2: Convert to fraction form
    13,997.56/19,315.90 = 7,708.76/x
  3. Step 3: Cross multiply
    13,997.56x = 19,315.90 × 7,708.76
  4. Step 4: Simplify right side
    13,997.56x = 148,901,637.28
  5. Step 5: Solve for x
    x = 148,901,637.28/13,997.56
  6. Step 6: Final answer
    x = 10,637.69

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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.