Home / 15,448.86-21,317.85-9,480.78

Finding the Fourth Proportional to 15,448.86, 21,317.85 and 9,480.78

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Solution

The fourth proportional to 15,448.86, 21,317.85 and 9,480.78 is: 13,082.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,448.86 : 21,317.85 = 9,480.78 : x
  2. Step 2: Convert to fraction form
    15,448.86/21,317.85 = 9,480.78/x
  3. Step 3: Cross multiply
    15,448.86x = 21,317.85 × 9,480.78
  4. Step 4: Simplify right side
    15,448.86x = 202,109,845.92
  5. Step 5: Solve for x
    x = 202,109,845.92/15,448.86
  6. Step 6: Final answer
    x = 13,082.51

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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.