Home / 20,475.17-28,253.45-11,525.75

Finding the Fourth Proportional to 20,475.17, 28,253.45 and 11,525.75

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Solution

The fourth proportional to 20,475.17, 28,253.45 and 11,525.75 is: 15,904.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,475.17 : 28,253.45 = 11,525.75 : x
  2. Step 2: Convert to fraction form
    20,475.17/28,253.45 = 11,525.75/x
  3. Step 3: Cross multiply
    20,475.17x = 28,253.45 × 11,525.75
  4. Step 4: Simplify right side
    20,475.17x = 325,642,143.71
  5. Step 5: Solve for x
    x = 325,642,143.71/20,475.17
  6. Step 6: Final answer
    x = 15,904.25

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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.