Home / 10,145.28-13,991.76-6,607.20

Finding the Fourth Proportional to 10,145.28, 13,991.76 and 6,607.20

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Solution

The fourth proportional to 10,145.28, 13,991.76 and 6,607.20 is: 9,112.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,145.28 : 13,991.76 = 6,607.20 : x
  2. Step 2: Convert to fraction form
    10,145.28/13,991.76 = 6,607.20/x
  3. Step 3: Cross multiply
    10,145.28x = 13,991.76 × 6,607.20
  4. Step 4: Simplify right side
    10,145.28x = 92,446,356.67
  5. Step 5: Solve for x
    x = 92,446,356.67/10,145.28
  6. Step 6: Final answer
    x = 9,112.25

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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.