Home / 28,340.20-39,108.54-15,764.68

Finding the Fourth Proportional to 28,340.20, 39,108.54 and 15,764.68

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Solution

The fourth proportional to 28,340.20, 39,108.54 and 15,764.68 is: 21,754.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,340.20 : 39,108.54 = 15,764.68 : x
  2. Step 2: Convert to fraction form
    28,340.20/39,108.54 = 15,764.68/x
  3. Step 3: Cross multiply
    28,340.20x = 39,108.54 × 15,764.68
  4. Step 4: Simplify right side
    28,340.20x = 616,533,618.37
  5. Step 5: Solve for x
    x = 616,533,618.37/28,340.20
  6. Step 6: Final answer
    x = 21,754.74

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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.