Home / 39,577.67-54,617.27-21,428.57

Finding the Fourth Proportional to 39,577.67, 54,617.27 and 21,428.57

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Solution

The fourth proportional to 39,577.67, 54,617.27 and 21,428.57 is: 29,571.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,577.67 : 54,617.27 = 21,428.57 : x
  2. Step 2: Convert to fraction form
    39,577.67/54,617.27 = 21,428.57/x
  3. Step 3: Cross multiply
    39,577.67x = 54,617.27 × 21,428.57
  4. Step 4: Simplify right side
    39,577.67x = 1,170,369,613.17
  5. Step 5: Solve for x
    x = 1,170,369,613.17/39,577.67
  6. Step 6: Final answer
    x = 29,571.47

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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.