Home / 28,023.80-38,671.68-15,276.70

Finding the Fourth Proportional to 28,023.80, 38,671.68 and 15,276.70

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Solution

The fourth proportional to 28,023.80, 38,671.68 and 15,276.70 is: 21,081.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,023.80 : 38,671.68 = 15,276.70 : x
  2. Step 2: Convert to fraction form
    28,023.80/38,671.68 = 15,276.70/x
  3. Step 3: Cross multiply
    28,023.80x = 38,671.68 × 15,276.70
  4. Step 4: Simplify right side
    28,023.80x = 590,775,653.86
  5. Step 5: Solve for x
    x = 590,775,653.86/28,023.80
  6. Step 6: Final answer
    x = 21,081.21

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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.