Home / 31,426.78-43,366.38-18,504.01

Finding the Fourth Proportional to 31,426.78, 43,366.38 and 18,504.01

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Solution

The fourth proportional to 31,426.78, 43,366.38 and 18,504.01 is: 25,534.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,426.78 : 43,366.38 = 18,504.01 : x
  2. Step 2: Convert to fraction form
    31,426.78/43,366.38 = 18,504.01/x
  3. Step 3: Cross multiply
    31,426.78x = 43,366.38 × 18,504.01
  4. Step 4: Simplify right side
    31,426.78x = 802,451,929.18
  5. Step 5: Solve for x
    x = 802,451,929.18/31,426.78
  6. Step 6: Final answer
    x = 25,534.02

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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.