Home / 20,619.84-28,454.98-11,667.18

Finding the Fourth Proportional to 20,619.84, 28,454.98 and 11,667.18

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Solution

The fourth proportional to 20,619.84, 28,454.98 and 11,667.18 is: 16,100.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,619.84 : 28,454.98 = 11,667.18 : x
  2. Step 2: Convert to fraction form
    20,619.84/28,454.98 = 11,667.18/x
  3. Step 3: Cross multiply
    20,619.84x = 28,454.98 × 11,667.18
  4. Step 4: Simplify right side
    20,619.84x = 331,989,373.56
  5. Step 5: Solve for x
    x = 331,989,373.56/20,619.84
  6. Step 6: Final answer
    x = 16,100.48

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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.