Home / 39,549.53-54,578.18-21,400.19

Finding the Fourth Proportional to 39,549.53, 54,578.18 and 21,400.19

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Solution

The fourth proportional to 39,549.53, 54,578.18 and 21,400.19 is: 29,532.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,549.53 : 54,578.18 = 21,400.19 : x
  2. Step 2: Convert to fraction form
    39,549.53/54,578.18 = 21,400.19/x
  3. Step 3: Cross multiply
    39,549.53x = 54,578.18 × 21,400.19
  4. Step 4: Simplify right side
    39,549.53x = 1,167,983,041.96
  5. Step 5: Solve for x
    x = 1,167,983,041.96/39,549.53
  6. Step 6: Final answer
    x = 29,532.16

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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.