Home / 19,623.75-29,448.11-7,142.57

Finding the Fourth Proportional to 19,623.75, 29,448.11 and 7,142.57

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Solution

The fourth proportional to 19,623.75, 29,448.11 and 7,142.57 is: 10,718.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,623.75 : 29,448.11 = 7,142.57 : x
  2. Step 2: Convert to fraction form
    19,623.75/29,448.11 = 7,142.57/x
  3. Step 3: Cross multiply
    19,623.75x = 29,448.11 × 7,142.57
  4. Step 4: Simplify right side
    19,623.75x = 210,335,187.04
  5. Step 5: Solve for x
    x = 210,335,187.04/19,623.75
  6. Step 6: Final answer
    x = 10,718.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.