Home / 39,623.88-54,680.09-21,718.50

Finding the Fourth Proportional to 39,623.88, 54,680.09 and 21,718.50

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Solution

The fourth proportional to 39,623.88, 54,680.09 and 21,718.50 is: 29,971.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,623.88 : 54,680.09 = 21,718.50 : x
  2. Step 2: Convert to fraction form
    39,623.88/54,680.09 = 21,718.50/x
  3. Step 3: Cross multiply
    39,623.88x = 54,680.09 × 21,718.50
  4. Step 4: Simplify right side
    39,623.88x = 1,187,569,282.11
  5. Step 5: Solve for x
    x = 1,187,569,282.11/39,623.88
  6. Step 6: Final answer
    x = 29,971.05

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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.