Home / 39,623.12-54,681.26-21,718.11

Finding the Fourth Proportional to 39,623.12, 54,681.26 and 21,718.11

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Solution

The fourth proportional to 39,623.12, 54,681.26 and 21,718.11 is: 29,971.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,623.12 : 54,681.26 = 21,718.11 : x
  2. Step 2: Convert to fraction form
    39,623.12/54,681.26 = 21,718.11/x
  3. Step 3: Cross multiply
    39,623.12x = 54,681.26 × 21,718.11
  4. Step 4: Simplify right side
    39,623.12x = 1,187,573,619.62
  5. Step 5: Solve for x
    x = 1,187,573,619.62/39,623.12
  6. Step 6: Final answer
    x = 29,971.73

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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.