Home / 31,727.63-43,772.55-18,981.18

Finding the Fourth Proportional to 31,727.63, 43,772.55 and 18,981.18

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Solution

The fourth proportional to 31,727.63, 43,772.55 and 18,981.18 is: 26,187.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,727.63 : 43,772.55 = 18,981.18 : x
  2. Step 2: Convert to fraction form
    31,727.63/43,772.55 = 18,981.18/x
  3. Step 3: Cross multiply
    31,727.63x = 43,772.55 × 18,981.18
  4. Step 4: Simplify right side
    31,727.63x = 830,854,555.70
  5. Step 5: Solve for x
    x = 830,854,555.70/31,727.63
  6. Step 6: Final answer
    x = 26,187.10

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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.