Home / 39,763.36-54,870.24-21,857.92

Finding the Fourth Proportional to 39,763.36, 54,870.24 and 21,857.92

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Solution

The fourth proportional to 39,763.36, 54,870.24 and 21,857.92 is: 30,162.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,763.36 : 54,870.24 = 21,857.92 : x
  2. Step 2: Convert to fraction form
    39,763.36/54,870.24 = 21,857.92/x
  3. Step 3: Cross multiply
    39,763.36x = 54,870.24 × 21,857.92
  4. Step 4: Simplify right side
    39,763.36x = 1,199,349,316.30
  5. Step 5: Solve for x
    x = 1,199,349,316.30/39,763.36
  6. Step 6: Final answer
    x = 30,162.17

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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.