Home / 39,378.65-54,343.89-22,383.60

Finding the Fourth Proportional to 39,378.65, 54,343.89 and 22,383.60

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Solution

The fourth proportional to 39,378.65, 54,343.89 and 22,383.60 is: 30,890.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,378.65 : 54,343.89 = 22,383.60 : x
  2. Step 2: Convert to fraction form
    39,378.65/54,343.89 = 22,383.60/x
  3. Step 3: Cross multiply
    39,378.65x = 54,343.89 × 22,383.60
  4. Step 4: Simplify right side
    39,378.65x = 1,216,411,896.20
  5. Step 5: Solve for x
    x = 1,216,411,896.20/39,378.65
  6. Step 6: Final answer
    x = 30,890.14

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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.