Home / 31,362.72-43,294.80-20,047.68

Finding the Fourth Proportional to 31,362.72, 43,294.80 and 20,047.68

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Solution

The fourth proportional to 31,362.72, 43,294.80 and 20,047.68 is: 27,674.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,362.72 : 43,294.80 = 20,047.68 : x
  2. Step 2: Convert to fraction form
    31,362.72/43,294.80 = 20,047.68/x
  3. Step 3: Cross multiply
    31,362.72x = 43,294.80 × 20,047.68
  4. Step 4: Simplify right side
    31,362.72x = 867,960,296.06
  5. Step 5: Solve for x
    x = 867,960,296.06/31,362.72
  6. Step 6: Final answer
    x = 27,674.90

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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.