Home / 10,145.55-13,947.10-8,724.03

Finding the Fourth Proportional to 10,145.55, 13,947.10 and 8,724.03

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Solution

The fourth proportional to 10,145.55, 13,947.10 and 8,724.03 is: 11,992.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,145.55 : 13,947.10 = 8,724.03 : x
  2. Step 2: Convert to fraction form
    10,145.55/13,947.10 = 8,724.03/x
  3. Step 3: Cross multiply
    10,145.55x = 13,947.10 × 8,724.03
  4. Step 4: Simplify right side
    10,145.55x = 121,674,918.81
  5. Step 5: Solve for x
    x = 121,674,918.81/10,145.55
  6. Step 6: Final answer
    x = 11,992.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.