Home / 15,271.53-21,074.79-9,963.21

Finding the Fourth Proportional to 15,271.53, 21,074.79 and 9,963.21

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Solution

The fourth proportional to 15,271.53, 21,074.79 and 9,963.21 is: 13,749.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,271.53 : 21,074.79 = 9,963.21 : x
  2. Step 2: Convert to fraction form
    15,271.53/21,074.79 = 9,963.21/x
  3. Step 3: Cross multiply
    15,271.53x = 21,074.79 × 9,963.21
  4. Step 4: Simplify right side
    15,271.53x = 209,972,508.66
  5. Step 5: Solve for x
    x = 209,972,508.66/15,271.53
  6. Step 6: Final answer
    x = 13,749.28

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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.