Home / 15,272.28-21,075.82-9,963.96

Finding the Fourth Proportional to 15,272.28, 21,075.82 and 9,963.96

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Solution

The fourth proportional to 15,272.28, 21,075.82 and 9,963.96 is: 13,750.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,272.28 : 21,075.82 = 9,963.96 : x
  2. Step 2: Convert to fraction form
    15,272.28/21,075.82 = 9,963.96/x
  3. Step 3: Cross multiply
    15,272.28x = 21,075.82 × 9,963.96
  4. Step 4: Simplify right side
    15,272.28x = 209,998,627.45
  5. Step 5: Solve for x
    x = 209,998,627.45/15,272.28
  6. Step 6: Final answer
    x = 13,750.31

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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.