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Finding the Fourth Proportional to 39,801.51, 54,926.45 and 21,652.63

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Solution

The fourth proportional to 39,801.51, 54,926.45 and 21,652.63 is: 29,880.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,801.51 : 54,926.45 = 21,652.63 : x
  2. Step 2: Convert to fraction form
    39,801.51/54,926.45 = 21,652.63/x
  3. Step 3: Cross multiply
    39,801.51x = 54,926.45 × 21,652.63
  4. Step 4: Simplify right side
    39,801.51x = 1,189,302,155.18
  5. Step 5: Solve for x
    x = 1,189,302,155.18/39,801.51
  6. Step 6: Final answer
    x = 29,880.83

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1.5x scale

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.