Home / 31,748.38-43,810.63-18,320.20

Finding the Fourth Proportional to 31,748.38, 43,810.63 and 18,320.20

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Solution

The fourth proportional to 31,748.38, 43,810.63 and 18,320.20 is: 25,280.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,748.38 : 43,810.63 = 18,320.20 : x
  2. Step 2: Convert to fraction form
    31,748.38/43,810.63 = 18,320.20/x
  3. Step 3: Cross multiply
    31,748.38x = 43,810.63 × 18,320.20
  4. Step 4: Simplify right side
    31,748.38x = 802,619,503.73
  5. Step 5: Solve for x
    x = 802,619,503.73/31,748.38
  6. Step 6: Final answer
    x = 25,280.64

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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.