Home / 39,548.55-54,577-21,643.57

Finding the Fourth Proportional to 39,548.55, 54,577 and 21,643.57

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Solution

The fourth proportional to 39,548.55, 54,577 and 21,643.57 is: 29,868.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,548.55 : 54,577 = 21,643.57 : x
  2. Step 2: Convert to fraction form
    39,548.55/54,577 = 21,643.57/x
  3. Step 3: Cross multiply
    39,548.55x = 54,577 × 21,643.57
  4. Step 4: Simplify right side
    39,548.55x = 1,181,241,119.89
  5. Step 5: Solve for x
    x = 1,181,241,119.89/39,548.55
  6. Step 6: Final answer
    x = 29,868.13

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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.