Home / 39,678.57-54,756.93-21,773.18

Finding the Fourth Proportional to 39,678.57, 54,756.93 and 21,773.18

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Solution

The fourth proportional to 39,678.57, 54,756.93 and 21,773.18 is: 30,047.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,678.57 : 54,756.93 = 21,773.18 : x
  2. Step 2: Convert to fraction form
    39,678.57/54,756.93 = 21,773.18/x
  3. Step 3: Cross multiply
    39,678.57x = 54,756.93 × 21,773.18
  4. Step 4: Simplify right side
    39,678.57x = 1,192,232,219.35
  5. Step 5: Solve for x
    x = 1,192,232,219.35/39,678.57
  6. Step 6: Final answer
    x = 30,047.26

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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.