Home / 39,083.12-53,934.54-21,178.20

Finding the Fourth Proportional to 39,083.12, 53,934.54 and 21,178.20

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Solution

The fourth proportional to 39,083.12, 53,934.54 and 21,178.20 is: 29,225.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,083.12 : 53,934.54 = 21,178.20 : x
  2. Step 2: Convert to fraction form
    39,083.12/53,934.54 = 21,178.20/x
  3. Step 3: Cross multiply
    39,083.12x = 53,934.54 × 21,178.20
  4. Step 4: Simplify right side
    39,083.12x = 1,142,236,475.03
  5. Step 5: Solve for x
    x = 1,142,236,475.03/39,083.12
  6. Step 6: Final answer
    x = 29,225.83

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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.