Home / 15,290.96-21,099.84-8,575.20

Finding the Fourth Proportional to 15,290.96, 21,099.84 and 8,575.20

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Solution

The fourth proportional to 15,290.96, 21,099.84 and 8,575.20 is: 11,832.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,290.96 : 21,099.84 = 8,575.20 : x
  2. Step 2: Convert to fraction form
    15,290.96/21,099.84 = 8,575.20/x
  3. Step 3: Cross multiply
    15,290.96x = 21,099.84 × 8,575.20
  4. Step 4: Simplify right side
    15,290.96x = 180,935,347.97
  5. Step 5: Solve for x
    x = 180,935,347.97/15,290.96
  6. Step 6: Final answer
    x = 11,832.84

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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.