Home / 14,154.39-21,187.85-12,667.23

Finding the Fourth Proportional to 14,154.39, 21,187.85 and 12,667.23

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Solution

The fourth proportional to 14,154.39, 21,187.85 and 12,667.23 is: 18,961.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,154.39 : 21,187.85 = 12,667.23 : x
  2. Step 2: Convert to fraction form
    14,154.39/21,187.85 = 12,667.23/x
  3. Step 3: Cross multiply
    14,154.39x = 21,187.85 × 12,667.23
  4. Step 4: Simplify right side
    14,154.39x = 268,391,305.82
  5. Step 5: Solve for x
    x = 268,391,305.82/14,154.39
  6. Step 6: Final answer
    x = 18,961.70

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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.