Home / 39,387.99-54,355.49-21,483.08

Finding the Fourth Proportional to 39,387.99, 54,355.49 and 21,483.08

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Solution

The fourth proportional to 39,387.99, 54,355.49 and 21,483.08 is: 29,646.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,387.99 : 54,355.49 = 21,483.08 : x
  2. Step 2: Convert to fraction form
    39,387.99/54,355.49 = 21,483.08/x
  3. Step 3: Cross multiply
    39,387.99x = 54,355.49 × 21,483.08
  4. Step 4: Simplify right side
    39,387.99x = 1,167,723,340.11
  5. Step 5: Solve for x
    x = 1,167,723,340.11/39,387.99
  6. Step 6: Final answer
    x = 29,646.69

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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.