Home / 39,443.16-54,431.28-21,538.16

Finding the Fourth Proportional to 39,443.16, 54,431.28 and 21,538.16

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Solution

The fourth proportional to 39,443.16, 54,431.28 and 21,538.16 is: 29,722.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,443.16 : 54,431.28 = 21,538.16 : x
  2. Step 2: Convert to fraction form
    39,443.16/54,431.28 = 21,538.16/x
  3. Step 3: Cross multiply
    39,443.16x = 54,431.28 × 21,538.16
  4. Step 4: Simplify right side
    39,443.16x = 1,172,349,617.64
  5. Step 5: Solve for x
    x = 1,172,349,617.64/39,443.16
  6. Step 6: Final answer
    x = 29,722.51

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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.