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Finding the Fourth Proportional to 18,973.33, 28,454.79 and 7,126.18

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Solution

The fourth proportional to 18,973.33, 28,454.79 and 7,126.18 is: 10,687.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,973.33 : 28,454.79 = 7,126.18 : x
  2. Step 2: Convert to fraction form
    18,973.33/28,454.79 = 7,126.18/x
  3. Step 3: Cross multiply
    18,973.33x = 28,454.79 × 7,126.18
  4. Step 4: Simplify right side
    18,973.33x = 202,774,061.03
  5. Step 5: Solve for x
    x = 202,774,061.03/18,973.33
  6. Step 6: Final answer
    x = 10,687.32

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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.