Home / 42,576.72-63,865.08-11,412.78

Finding the Fourth Proportional to 42,576.72, 63,865.08 and 11,412.78

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Solution

The fourth proportional to 42,576.72, 63,865.08 and 11,412.78 is: 17,119.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,576.72 : 63,865.08 = 11,412.78 : x
  2. Step 2: Convert to fraction form
    42,576.72/63,865.08 = 11,412.78/x
  3. Step 3: Cross multiply
    42,576.72x = 63,865.08 × 11,412.78
  4. Step 4: Simplify right side
    42,576.72x = 728,878,107.72
  5. Step 5: Solve for x
    x = 728,878,107.72/42,576.72
  6. Step 6: Final answer
    x = 17,119.17

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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.