Home / 39,399.87-54,373.19-21,495.86

Finding the Fourth Proportional to 39,399.87, 54,373.19 and 21,495.86

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Solution

The fourth proportional to 39,399.87, 54,373.19 and 21,495.86 is: 29,665.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,399.87 : 54,373.19 = 21,495.86 : x
  2. Step 2: Convert to fraction form
    39,399.87/54,373.19 = 21,495.86/x
  3. Step 3: Cross multiply
    39,399.87x = 54,373.19 × 21,495.86
  4. Step 4: Simplify right side
    39,399.87x = 1,168,798,479.99
  5. Step 5: Solve for x
    x = 1,168,798,479.99/39,399.87
  6. Step 6: Final answer
    x = 29,665.03

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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.