Home / 31,738.79-43,798.02-18,314.36

Finding the Fourth Proportional to 31,738.79, 43,798.02 and 18,314.36

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Solution

The fourth proportional to 31,738.79, 43,798.02 and 18,314.36 is: 25,272.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,738.79 : 43,798.02 = 18,314.36 : x
  2. Step 2: Convert to fraction form
    31,738.79/43,798.02 = 18,314.36/x
  3. Step 3: Cross multiply
    31,738.79x = 43,798.02 × 18,314.36
  4. Step 4: Simplify right side
    31,738.79x = 802,132,705.57
  5. Step 5: Solve for x
    x = 802,132,705.57/31,738.79
  6. Step 6: Final answer
    x = 25,272.95

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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.