Home / 15,330.03-21,157.32-8,615.94

Finding the Fourth Proportional to 15,330.03, 21,157.32 and 8,615.94

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Solution

The fourth proportional to 15,330.03, 21,157.32 and 8,615.94 is: 11,891.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,330.03 : 21,157.32 = 8,615.94 : x
  2. Step 2: Convert to fraction form
    15,330.03/21,157.32 = 8,615.94/x
  3. Step 3: Cross multiply
    15,330.03x = 21,157.32 × 8,615.94
  4. Step 4: Simplify right side
    15,330.03x = 182,290,199.68
  5. Step 5: Solve for x
    x = 182,290,199.68/15,330.03
  6. Step 6: Final answer
    x = 11,891.05

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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.