Home / 39,447.81-54,435.92-21,539.34

Finding the Fourth Proportional to 39,447.81, 54,435.92 and 21,539.34

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Solution

The fourth proportional to 39,447.81, 54,435.92 and 21,539.34 is: 29,723.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,447.81 : 54,435.92 = 21,539.34 : x
  2. Step 2: Convert to fraction form
    39,447.81/54,435.92 = 21,539.34/x
  3. Step 3: Cross multiply
    39,447.81x = 54,435.92 × 21,539.34
  4. Step 4: Simplify right side
    39,447.81x = 1,172,513,681.40
  5. Step 5: Solve for x
    x = 1,172,513,681.40/39,447.81
  6. Step 6: Final answer
    x = 29,723.16

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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.