Home / 31,053.27-42,903.62-21,663.75

Finding the Fourth Proportional to 31,053.27, 42,903.62 and 21,663.75

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Solution

The fourth proportional to 31,053.27, 42,903.62 and 21,663.75 is: 29,930.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,053.27 : 42,903.62 = 21,663.75 : x
  2. Step 2: Convert to fraction form
    31,053.27/42,903.62 = 21,663.75/x
  3. Step 3: Cross multiply
    31,053.27x = 42,903.62 × 21,663.75
  4. Step 4: Simplify right side
    31,053.27x = 929,453,189.46
  5. Step 5: Solve for x
    x = 929,453,189.46/31,053.27
  6. Step 6: Final answer
    x = 29,930.93

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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.