Home / 39,247.12-54,161.28-21,342.32

Finding the Fourth Proportional to 39,247.12, 54,161.28 and 21,342.32

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Solution

The fourth proportional to 39,247.12, 54,161.28 and 21,342.32 is: 29,452.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,247.12 : 54,161.28 = 21,342.32 : x
  2. Step 2: Convert to fraction form
    39,247.12/54,161.28 = 21,342.32/x
  3. Step 3: Cross multiply
    39,247.12x = 54,161.28 × 21,342.32
  4. Step 4: Simplify right side
    39,247.12x = 1,155,927,369.37
  5. Step 5: Solve for x
    x = 1,155,927,369.37/39,247.12
  6. Step 6: Final answer
    x = 29,452.54

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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.