Home / 39,784.47-54,903.99-21,880.86

Finding the Fourth Proportional to 39,784.47, 54,903.99 and 21,880.86

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Solution

The fourth proportional to 39,784.47, 54,903.99 and 21,880.86 is: 30,196.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,784.47 : 54,903.99 = 21,880.86 : x
  2. Step 2: Convert to fraction form
    39,784.47/54,903.99 = 21,880.86/x
  3. Step 3: Cross multiply
    39,784.47x = 54,903.99 × 21,880.86
  4. Step 4: Simplify right side
    39,784.47x = 1,201,346,518.63
  5. Step 5: Solve for x
    x = 1,201,346,518.63/39,784.47
  6. Step 6: Final answer
    x = 30,196.37

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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.