Home / 19,890.54-27,449.06-10,938.11

Finding the Fourth Proportional to 19,890.54, 27,449.06 and 10,938.11

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Solution

The fourth proportional to 19,890.54, 27,449.06 and 10,938.11 is: 15,094.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,890.54 : 27,449.06 = 10,938.11 : x
  2. Step 2: Convert to fraction form
    19,890.54/27,449.06 = 10,938.11/x
  3. Step 3: Cross multiply
    19,890.54x = 27,449.06 × 10,938.11
  4. Step 4: Simplify right side
    19,890.54x = 300,240,645.74
  5. Step 5: Solve for x
    x = 300,240,645.74/19,890.54
  6. Step 6: Final answer
    x = 15,094.65

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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.