Home / 39,247.87-54,162.32-21,343.07

Finding the Fourth Proportional to 39,247.87, 54,162.32 and 21,343.07

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Solution

The fourth proportional to 39,247.87, 54,162.32 and 21,343.07 is: 29,453.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,247.87 : 54,162.32 = 21,343.07 : x
  2. Step 2: Convert to fraction form
    39,247.87/54,162.32 = 21,343.07/x
  3. Step 3: Cross multiply
    39,247.87x = 54,162.32 × 21,343.07
  4. Step 4: Simplify right side
    39,247.87x = 1,155,990,080.41
  5. Step 5: Solve for x
    x = 1,155,990,080.41/39,247.87
  6. Step 6: Final answer
    x = 29,453.57

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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.