Home / 28,476.46-39,296.76-15,730.58

Finding the Fourth Proportional to 28,476.46, 39,296.76 and 15,730.58

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Solution

The fourth proportional to 28,476.46, 39,296.76 and 15,730.58 is: 21,707.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,476.46 : 39,296.76 = 15,730.58 : x
  2. Step 2: Convert to fraction form
    28,476.46/39,296.76 = 15,730.58/x
  3. Step 3: Cross multiply
    28,476.46x = 39,296.76 × 15,730.58
  4. Step 4: Simplify right side
    28,476.46x = 618,160,826.92
  5. Step 5: Solve for x
    x = 618,160,826.92/28,476.46
  6. Step 6: Final answer
    x = 21,707.78

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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.