Home / 21,053.36-31,425.89-18,562.30

Finding the Fourth Proportional to 21,053.36, 31,425.89 and 18,562.30

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Solution

The fourth proportional to 21,053.36, 31,425.89 and 18,562.30 is: 27,707.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,053.36 : 31,425.89 = 18,562.30 : x
  2. Step 2: Convert to fraction form
    21,053.36/31,425.89 = 18,562.30/x
  3. Step 3: Cross multiply
    21,053.36x = 31,425.89 × 18,562.30
  4. Step 4: Simplify right side
    21,053.36x = 583,336,765.79
  5. Step 5: Solve for x
    x = 583,336,765.79/21,053.36
  6. Step 6: Final answer
    x = 27,707.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.