Home / 39,357.81-54,312.18-21,452.43

Finding the Fourth Proportional to 39,357.81, 54,312.18 and 21,452.43

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Solution

The fourth proportional to 39,357.81, 54,312.18 and 21,452.43 is: 29,603.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,357.81 : 54,312.18 = 21,452.43 : x
  2. Step 2: Convert to fraction form
    39,357.81/54,312.18 = 21,452.43/x
  3. Step 3: Cross multiply
    39,357.81x = 54,312.18 × 21,452.43
  4. Step 4: Simplify right side
    39,357.81x = 1,165,128,239.60
  5. Step 5: Solve for x
    x = 1,165,128,239.60/39,357.81
  6. Step 6: Final answer
    x = 29,603.48

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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.