Home / 31,378.36-43,306.50-19,445.08

Finding the Fourth Proportional to 31,378.36, 43,306.50 and 19,445.08

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Solution

The fourth proportional to 31,378.36, 43,306.50 and 19,445.08 is: 26,836.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,378.36 : 43,306.50 = 19,445.08 : x
  2. Step 2: Convert to fraction form
    31,378.36/43,306.50 = 19,445.08/x
  3. Step 3: Cross multiply
    31,378.36x = 43,306.50 × 19,445.08
  4. Step 4: Simplify right side
    31,378.36x = 842,098,357.02
  5. Step 5: Solve for x
    x = 842,098,357.02/31,378.36
  6. Step 6: Final answer
    x = 26,836.91

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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.