Home / 31,198.66-43,073.23-20,307.20

Finding the Fourth Proportional to 31,198.66, 43,073.23 and 20,307.20

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Solution

The fourth proportional to 31,198.66, 43,073.23 and 20,307.20 is: 28,036.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,198.66 : 43,073.23 = 20,307.20 : x
  2. Step 2: Convert to fraction form
    31,198.66/43,073.23 = 20,307.20/x
  3. Step 3: Cross multiply
    31,198.66x = 43,073.23 × 20,307.20
  4. Step 4: Simplify right side
    31,198.66x = 874,696,430.12
  5. Step 5: Solve for x
    x = 874,696,430.12/31,198.66
  6. Step 6: Final answer
    x = 28,036.35

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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.