Home / 15,272.32-21,075.20-8,648.32

Finding the Fourth Proportional to 15,272.32, 21,075.20 and 8,648.32

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Solution

The fourth proportional to 15,272.32, 21,075.20 and 8,648.32 is: 11,934.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,272.32 : 21,075.20 = 8,648.32 : x
  2. Step 2: Convert to fraction form
    15,272.32/21,075.20 = 8,648.32/x
  3. Step 3: Cross multiply
    15,272.32x = 21,075.20 × 8,648.32
  4. Step 4: Simplify right side
    15,272.32x = 182,265,073.66
  5. Step 5: Solve for x
    x = 182,265,073.66/15,272.32
  6. Step 6: Final answer
    x = 11,934.34

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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.