Home / 15,330.80-21,157.26-8,616.08

Finding the Fourth Proportional to 15,330.80, 21,157.26 and 8,616.08

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Solution

The fourth proportional to 15,330.80, 21,157.26 and 8,616.08 is: 11,890.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,330.80 : 21,157.26 = 8,616.08 : x
  2. Step 2: Convert to fraction form
    15,330.80/21,157.26 = 8,616.08/x
  3. Step 3: Cross multiply
    15,330.80x = 21,157.26 × 8,616.08
  4. Step 4: Simplify right side
    15,330.80x = 182,292,644.74
  5. Step 5: Solve for x
    x = 182,292,644.74/15,330.80
  6. Step 6: Final answer
    x = 11,890.62

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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.