Home / 34,979.56-48,272.70-20,640.16

Finding the Fourth Proportional to 34,979.56, 48,272.70 and 20,640.16

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Solution

The fourth proportional to 34,979.56, 48,272.70 and 20,640.16 is: 28,483.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,979.56 : 48,272.70 = 20,640.16 : x
  2. Step 2: Convert to fraction form
    34,979.56/48,272.70 = 20,640.16/x
  3. Step 3: Cross multiply
    34,979.56x = 48,272.70 × 20,640.16
  4. Step 4: Simplify right side
    34,979.56x = 996,356,251.63
  5. Step 5: Solve for x
    x = 996,356,251.63/34,979.56
  6. Step 6: Final answer
    x = 28,483.96

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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.