Home / 39,357.22-54,312.64-21,451.90

Finding the Fourth Proportional to 39,357.22, 54,312.64 and 21,451.90

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Solution

The fourth proportional to 39,357.22, 54,312.64 and 21,451.90 is: 29,603.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,357.22 : 54,312.64 = 21,451.90 : x
  2. Step 2: Convert to fraction form
    39,357.22/54,312.64 = 21,451.90/x
  3. Step 3: Cross multiply
    39,357.22x = 54,312.64 × 21,451.90
  4. Step 4: Simplify right side
    39,357.22x = 1,165,109,322.02
  5. Step 5: Solve for x
    x = 1,165,109,322.02/39,357.22
  6. Step 6: Final answer
    x = 29,603.45

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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.