Home / 31,812.98-43,908.36-18,384.80

Finding the Fourth Proportional to 31,812.98, 43,908.36 and 18,384.80

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Solution

The fourth proportional to 31,812.98, 43,908.36 and 18,384.80 is: 25,374.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,812.98 : 43,908.36 = 18,384.80 : x
  2. Step 2: Convert to fraction form
    31,812.98/43,908.36 = 18,384.80/x
  3. Step 3: Cross multiply
    31,812.98x = 43,908.36 × 18,384.80
  4. Step 4: Simplify right side
    31,812.98x = 807,246,416.93
  5. Step 5: Solve for x
    x = 807,246,416.93/31,812.98
  6. Step 6: Final answer
    x = 25,374.75

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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.