Home / 39,279.56-54,206.35-21,374.58

Finding the Fourth Proportional to 39,279.56, 54,206.35 and 21,374.58

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Solution

The fourth proportional to 39,279.56, 54,206.35 and 21,374.58 is: 29,497.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,279.56 : 54,206.35 = 21,374.58 : x
  2. Step 2: Convert to fraction form
    39,279.56/54,206.35 = 21,374.58/x
  3. Step 3: Cross multiply
    39,279.56x = 54,206.35 × 21,374.58
  4. Step 4: Simplify right side
    39,279.56x = 1,158,637,964.58
  5. Step 5: Solve for x
    x = 1,158,637,964.58/39,279.56
  6. Step 6: Final answer
    x = 29,497.22

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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.