Home / 39,784.68-54,901.80-21,881.52

Finding the Fourth Proportional to 39,784.68, 54,901.80 and 21,881.52

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Solution

The fourth proportional to 39,784.68, 54,901.80 and 21,881.52 is: 30,195.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,784.68 : 54,901.80 = 21,881.52 : x
  2. Step 2: Convert to fraction form
    39,784.68/54,901.80 = 21,881.52/x
  3. Step 3: Cross multiply
    39,784.68x = 54,901.80 × 21,881.52
  4. Step 4: Simplify right side
    39,784.68x = 1,201,334,834.74
  5. Step 5: Solve for x
    x = 1,201,334,834.74/39,784.68
  6. Step 6: Final answer
    x = 30,195.92

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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.