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Finding the Fourth Proportional to 17,955.90, 26,938.18 and 5,643.90

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Solution

The fourth proportional to 17,955.90, 26,938.18 and 5,643.90 is: 8,467.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,955.90 : 26,938.18 = 5,643.90 : x
  2. Step 2: Convert to fraction form
    17,955.90/26,938.18 = 5,643.90/x
  3. Step 3: Cross multiply
    17,955.90x = 26,938.18 × 5,643.90
  4. Step 4: Simplify right side
    17,955.90x = 152,036,394.10
  5. Step 5: Solve for x
    x = 152,036,394.10/17,955.90
  6. Step 6: Final answer
    x = 8,467.21

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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.