Home / 31,623.62-47,459.91-11,920.10

Finding the Fourth Proportional to 31,623.62, 47,459.91 and 11,920.10

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Solution

The fourth proportional to 31,623.62, 47,459.91 and 11,920.10 is: 17,889.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,623.62 : 47,459.91 = 11,920.10 : x
  2. Step 2: Convert to fraction form
    31,623.62/47,459.91 = 11,920.10/x
  3. Step 3: Cross multiply
    31,623.62x = 47,459.91 × 11,920.10
  4. Step 4: Simplify right side
    31,623.62x = 565,726,873.19
  5. Step 5: Solve for x
    x = 565,726,873.19/31,623.62
  6. Step 6: Final answer
    x = 17,889.38

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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.