Home / 21,335.32-29,469.18-15,075.64

Finding the Fourth Proportional to 21,335.32, 29,469.18 and 15,075.64

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Solution

The fourth proportional to 21,335.32, 29,469.18 and 15,075.64 is: 20,823.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,335.32 : 29,469.18 = 15,075.64 : x
  2. Step 2: Convert to fraction form
    21,335.32/29,469.18 = 15,075.64/x
  3. Step 3: Cross multiply
    21,335.32x = 29,469.18 × 15,075.64
  4. Step 4: Simplify right side
    21,335.32x = 444,266,748.78
  5. Step 5: Solve for x
    x = 444,266,748.78/21,335.32
  6. Step 6: Final answer
    x = 20,823.06

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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.