Home / 39,356.51-54,311.64-21,451.52

Finding the Fourth Proportional to 39,356.51, 54,311.64 and 21,451.52

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Solution

The fourth proportional to 39,356.51, 54,311.64 and 21,451.52 is: 29,602.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,356.51 : 54,311.64 = 21,451.52 : x
  2. Step 2: Convert to fraction form
    39,356.51/54,311.64 = 21,451.52/x
  3. Step 3: Cross multiply
    39,356.51x = 54,311.64 × 21,451.52
  4. Step 4: Simplify right side
    39,356.51x = 1,165,066,960.13
  5. Step 5: Solve for x
    x = 1,165,066,960.13/39,356.51
  6. Step 6: Final answer
    x = 29,602.91

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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.