Home / 39,726.28-54,822.32-21,821.64

Finding the Fourth Proportional to 39,726.28, 54,822.32 and 21,821.64

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Solution

The fourth proportional to 39,726.28, 54,822.32 and 21,821.64 is: 30,113.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,726.28 : 54,822.32 = 21,821.64 : x
  2. Step 2: Convert to fraction form
    39,726.28/54,822.32 = 21,821.64/x
  3. Step 3: Cross multiply
    39,726.28x = 54,822.32 × 21,821.64
  4. Step 4: Simplify right side
    39,726.28x = 1,196,312,698.14
  5. Step 5: Solve for x
    x = 1,196,312,698.14/39,726.28
  6. Step 6: Final answer
    x = 30,113.89

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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.