Home / 31,407.14-43,343.90-19,478.42

Finding the Fourth Proportional to 31,407.14, 43,343.90 and 19,478.42

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Solution

The fourth proportional to 31,407.14, 43,343.90 and 19,478.42 is: 26,881.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,407.14 : 43,343.90 = 19,478.42 : x
  2. Step 2: Convert to fraction form
    31,407.14/43,343.90 = 19,478.42/x
  3. Step 3: Cross multiply
    31,407.14x = 43,343.90 × 19,478.42
  4. Step 4: Simplify right side
    31,407.14x = 844,270,845.69
  5. Step 5: Solve for x
    x = 844,270,845.69/31,407.14
  6. Step 6: Final answer
    x = 26,881.49

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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.