Home / 31,212-43,073.34-18,947.55

Finding the Fourth Proportional to 31,212, 43,073.34 and 18,947.55

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Solution

The fourth proportional to 31,212, 43,073.34 and 18,947.55 is: 26,148.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,212 : 43,073.34 = 18,947.55 : x
  2. Step 2: Convert to fraction form
    31,212/43,073.34 = 18,947.55/x
  3. Step 3: Cross multiply
    31,212x = 43,073.34 × 18,947.55
  4. Step 4: Simplify right side
    31,212x = 816,134,263.32
  5. Step 5: Solve for x
    x = 816,134,263.32/31,212
  6. Step 6: Final answer
    x = 26,148.09

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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.