Home / 21,235.01-31,673.34-18,439.70

Finding the Fourth Proportional to 21,235.01, 31,673.34 and 18,439.70

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Solution

The fourth proportional to 21,235.01, 31,673.34 and 18,439.70 is: 27,503.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,235.01 : 31,673.34 = 18,439.70 : x
  2. Step 2: Convert to fraction form
    21,235.01/31,673.34 = 18,439.70/x
  3. Step 3: Cross multiply
    21,235.01x = 31,673.34 × 18,439.70
  4. Step 4: Simplify right side
    21,235.01x = 584,046,729.23
  5. Step 5: Solve for x
    x = 584,046,729.23/21,235.01
  6. Step 6: Final answer
    x = 27,503.96

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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.