Home / 39,216.16-54,117.21-21,310.57

Finding the Fourth Proportional to 39,216.16, 54,117.21 and 21,310.57

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Solution

The fourth proportional to 39,216.16, 54,117.21 and 21,310.57 is: 29,407.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,216.16 : 54,117.21 = 21,310.57 : x
  2. Step 2: Convert to fraction form
    39,216.16/54,117.21 = 21,310.57/x
  3. Step 3: Cross multiply
    39,216.16x = 54,117.21 × 21,310.57
  4. Step 4: Simplify right side
    39,216.16x = 1,153,268,591.91
  5. Step 5: Solve for x
    x = 1,153,268,591.91/39,216.16
  6. Step 6: Final answer
    x = 29,407.99

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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.