Home / 13,887.15-19,164.18-12,757.50

Finding the Fourth Proportional to 13,887.15, 19,164.18 and 12,757.50

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Solution

The fourth proportional to 13,887.15, 19,164.18 and 12,757.50 is: 17,605.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,887.15 : 19,164.18 = 12,757.50 : x
  2. Step 2: Convert to fraction form
    13,887.15/19,164.18 = 12,757.50/x
  3. Step 3: Cross multiply
    13,887.15x = 19,164.18 × 12,757.50
  4. Step 4: Simplify right side
    13,887.15x = 244,487,026.35
  5. Step 5: Solve for x
    x = 244,487,026.35/13,887.15
  6. Step 6: Final answer
    x = 17,605.27

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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.