Home / 20,030.40-27,641.79-11,077.88

Finding the Fourth Proportional to 20,030.40, 27,641.79 and 11,077.88

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Solution

The fourth proportional to 20,030.40, 27,641.79 and 11,077.88 is: 15,287.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,030.40 : 27,641.79 = 11,077.88 : x
  2. Step 2: Convert to fraction form
    20,030.40/27,641.79 = 11,077.88/x
  3. Step 3: Cross multiply
    20,030.40x = 27,641.79 × 11,077.88
  4. Step 4: Simplify right side
    20,030.40x = 306,212,294.40
  5. Step 5: Solve for x
    x = 306,212,294.40/20,030.40
  6. Step 6: Final answer
    x = 15,287.38

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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.