Home / 31,133.11-42,950.60-21,707.14

Finding the Fourth Proportional to 31,133.11, 42,950.60 and 21,707.14

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Solution

The fourth proportional to 31,133.11, 42,950.60 and 21,707.14 is: 29,946.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,133.11 : 42,950.60 = 21,707.14 : x
  2. Step 2: Convert to fraction form
    31,133.11/42,950.60 = 21,707.14/x
  3. Step 3: Cross multiply
    31,133.11x = 42,950.60 × 21,707.14
  4. Step 4: Simplify right side
    31,133.11x = 932,334,687.28
  5. Step 5: Solve for x
    x = 932,334,687.28/31,133.11
  6. Step 6: Final answer
    x = 29,946.73

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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.