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Finding the Fourth Proportional to 22,420.58, 30,912.99 and 14,022.50

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Solution

The fourth proportional to 22,420.58, 30,912.99 and 14,022.50 is: 19,333.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,420.58 : 30,912.99 = 14,022.50 : x
  2. Step 2: Convert to fraction form
    22,420.58/30,912.99 = 14,022.50/x
  3. Step 3: Cross multiply
    22,420.58x = 30,912.99 × 14,022.50
  4. Step 4: Simplify right side
    22,420.58x = 433,477,402.28
  5. Step 5: Solve for x
    x = 433,477,402.28/22,420.58
  6. Step 6: Final answer
    x = 19,333.91

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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.