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Finding the Fourth Proportional to 22,703.40, 34,076.70 and 19,420.20

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Solution

The fourth proportional to 22,703.40, 34,076.70 and 19,420.20 is: 29,148.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,703.40 : 34,076.70 = 19,420.20 : x
  2. Step 2: Convert to fraction form
    22,703.40/34,076.70 = 19,420.20/x
  3. Step 3: Cross multiply
    22,703.40x = 34,076.70 × 19,420.20
  4. Step 4: Simplify right side
    22,703.40x = 661,776,329.34
  5. Step 5: Solve for x
    x = 661,776,329.34/22,703.40
  6. Step 6: Final answer
    x = 29,148.78

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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.