Home / 28,586.74-42,806.26-19,729.40

Finding the Fourth Proportional to 28,586.74, 42,806.26 and 19,729.40

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Solution

The fourth proportional to 28,586.74, 42,806.26 and 19,729.40 is: 29,543.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,586.74 : 42,806.26 = 19,729.40 : x
  2. Step 2: Convert to fraction form
    28,586.74/42,806.26 = 19,729.40/x
  3. Step 3: Cross multiply
    28,586.74x = 42,806.26 × 19,729.40
  4. Step 4: Simplify right side
    28,586.74x = 844,541,826.04
  5. Step 5: Solve for x
    x = 844,541,826.04/28,586.74
  6. Step 6: Final answer
    x = 29,543.13

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.