Home / 20,259.40-27,959.16-11,307.28

Finding the Fourth Proportional to 20,259.40, 27,959.16 and 11,307.28

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Solution

The fourth proportional to 20,259.40, 27,959.16 and 11,307.28 is: 15,604.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,259.40 : 27,959.16 = 11,307.28 : x
  2. Step 2: Convert to fraction form
    20,259.40/27,959.16 = 11,307.28/x
  3. Step 3: Cross multiply
    20,259.40x = 27,959.16 × 11,307.28
  4. Step 4: Simplify right side
    20,259.40x = 316,142,050.68
  5. Step 5: Solve for x
    x = 316,142,050.68/20,259.40
  6. Step 6: Final answer
    x = 15,604.71

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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.