Home / 39,358.95-54,315.45-21,453.72

Finding the Fourth Proportional to 39,358.95, 54,315.45 and 21,453.72

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Solution

The fourth proportional to 39,358.95, 54,315.45 and 21,453.72 is: 29,606.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,358.95 : 54,315.45 = 21,453.72 : x
  2. Step 2: Convert to fraction form
    39,358.95/54,315.45 = 21,453.72/x
  3. Step 3: Cross multiply
    39,358.95x = 54,315.45 × 21,453.72
  4. Step 4: Simplify right side
    39,358.95x = 1,165,268,455.97
  5. Step 5: Solve for x
    x = 1,165,268,455.97/39,358.95
  6. Step 6: Final answer
    x = 29,606.19

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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.