Home / 21,375.51-32,069.74-10,279.05

Finding the Fourth Proportional to 21,375.51, 32,069.74 and 10,279.05

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Solution

The fourth proportional to 21,375.51, 32,069.74 and 10,279.05 is: 15,421.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,375.51 : 32,069.74 = 10,279.05 : x
  2. Step 2: Convert to fraction form
    21,375.51/32,069.74 = 10,279.05/x
  3. Step 3: Cross multiply
    21,375.51x = 32,069.74 × 10,279.05
  4. Step 4: Simplify right side
    21,375.51x = 329,646,460.95
  5. Step 5: Solve for x
    x = 329,646,460.95/21,375.51
  6. Step 6: Final answer
    x = 15,421.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.