Home / 23,180.81-31,989.42-12,570.44

Finding the Fourth Proportional to 23,180.81, 31,989.42 and 12,570.44

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Solution

The fourth proportional to 23,180.81, 31,989.42 and 12,570.44 is: 17,347.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,180.81 : 31,989.42 = 12,570.44 : x
  2. Step 2: Convert to fraction form
    23,180.81/31,989.42 = 12,570.44/x
  3. Step 3: Cross multiply
    23,180.81x = 31,989.42 × 12,570.44
  4. Step 4: Simplify right side
    23,180.81x = 402,120,924.80
  5. Step 5: Solve for x
    x = 402,120,924.80/23,180.81
  6. Step 6: Final answer
    x = 17,347.15

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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.