Home / 21,148.24-29,184.96-12,769.60

Finding the Fourth Proportional to 21,148.24, 29,184.96 and 12,769.60

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Solution

The fourth proportional to 21,148.24, 29,184.96 and 12,769.60 is: 17,622.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,148.24 : 29,184.96 = 12,769.60 : x
  2. Step 2: Convert to fraction form
    21,148.24/29,184.96 = 12,769.60/x
  3. Step 3: Cross multiply
    21,148.24x = 29,184.96 × 12,769.60
  4. Step 4: Simplify right side
    21,148.24x = 372,680,265.22
  5. Step 5: Solve for x
    x = 372,680,265.22/21,148.24
  6. Step 6: Final answer
    x = 17,622.28

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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.