Home / 13,667.52-18,857.70-8,360.40

Finding the Fourth Proportional to 13,667.52, 18,857.70 and 8,360.40

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Solution

The fourth proportional to 13,667.52, 18,857.70 and 8,360.40 is: 11,535.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,667.52 : 18,857.70 = 8,360.40 : x
  2. Step 2: Convert to fraction form
    13,667.52/18,857.70 = 8,360.40/x
  3. Step 3: Cross multiply
    13,667.52x = 18,857.70 × 8,360.40
  4. Step 4: Simplify right side
    13,667.52x = 157,657,915.08
  5. Step 5: Solve for x
    x = 157,657,915.08/13,667.52
  6. Step 6: Final answer
    x = 11,535.22

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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.