Home / 31,423.80-43,365-17,277.55

Finding the Fourth Proportional to 31,423.80, 43,365 and 17,277.55

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Solution

The fourth proportional to 31,423.80, 43,365 and 17,277.55 is: 23,843.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,423.80 : 43,365 = 17,277.55 : x
  2. Step 2: Convert to fraction form
    31,423.80/43,365 = 17,277.55/x
  3. Step 3: Cross multiply
    31,423.80x = 43,365 × 17,277.55
  4. Step 4: Simplify right side
    31,423.80x = 749,240,955.75
  5. Step 5: Solve for x
    x = 749,240,955.75/31,423.80
  6. Step 6: Final answer
    x = 23,843.10

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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.