Home / 34,623.78-47,781-20,292.06

Finding the Fourth Proportional to 34,623.78, 47,781 and 20,292.06

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Solution

The fourth proportional to 34,623.78, 47,781 and 20,292.06 is: 28,003.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,623.78 : 47,781 = 20,292.06 : x
  2. Step 2: Convert to fraction form
    34,623.78/47,781 = 20,292.06/x
  3. Step 3: Cross multiply
    34,623.78x = 47,781 × 20,292.06
  4. Step 4: Simplify right side
    34,623.78x = 969,574,918.86
  5. Step 5: Solve for x
    x = 969,574,918.86/34,623.78
  6. Step 6: Final answer
    x = 28,003.15

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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.