Home / 39,827-54,964.92-21,925.64

Finding the Fourth Proportional to 39,827, 54,964.92 and 21,925.64

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Solution

The fourth proportional to 39,827, 54,964.92 and 21,925.64 is: 30,259.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,827 : 54,964.92 = 21,925.64 : x
  2. Step 2: Convert to fraction form
    39,827/54,964.92 = 21,925.64/x
  3. Step 3: Cross multiply
    39,827x = 54,964.92 × 21,925.64
  4. Step 4: Simplify right side
    39,827x = 1,205,141,048.55
  5. Step 5: Solve for x
    x = 1,205,141,048.55/39,827
  6. Step 6: Final answer
    x = 30,259.40

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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.