Home / 19,890.18-27,449.10-10,938.33

Finding the Fourth Proportional to 19,890.18, 27,449.10 and 10,938.33

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Solution

The fourth proportional to 19,890.18, 27,449.10 and 10,938.33 is: 15,095.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,890.18 : 27,449.10 = 10,938.33 : x
  2. Step 2: Convert to fraction form
    19,890.18/27,449.10 = 10,938.33/x
  3. Step 3: Cross multiply
    19,890.18x = 27,449.10 × 10,938.33
  4. Step 4: Simplify right side
    19,890.18x = 300,247,314.00
  5. Step 5: Solve for x
    x = 300,247,314.00/19,890.18
  6. Step 6: Final answer
    x = 15,095.25

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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.