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Finding the Fourth Proportional to 17,570, 26,355 and 4,422.40

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Solution

The fourth proportional to 17,570, 26,355 and 4,422.40 is: 6,633.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,570 : 26,355 = 4,422.40 : x
  2. Step 2: Convert to fraction form
    17,570/26,355 = 4,422.40/x
  3. Step 3: Cross multiply
    17,570x = 26,355 × 4,422.40
  4. Step 4: Simplify right side
    17,570x = 116,552,352.00
  5. Step 5: Solve for x
    x = 116,552,352.00/17,570
  6. Step 6: Final answer
    x = 6,633.60

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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.