Home / 18,912.40-28,510.22-17,643.76

Finding the Fourth Proportional to 18,912.40, 28,510.22 and 17,643.76

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Solution

The fourth proportional to 18,912.40, 28,510.22 and 17,643.76 is: 26,597.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,912.40 : 28,510.22 = 17,643.76 : x
  2. Step 2: Convert to fraction form
    18,912.40/28,510.22 = 17,643.76/x
  3. Step 3: Cross multiply
    18,912.40x = 28,510.22 × 17,643.76
  4. Step 4: Simplify right side
    18,912.40x = 503,027,479.23
  5. Step 5: Solve for x
    x = 503,027,479.23/18,912.40
  6. Step 6: Final answer
    x = 26,597.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.