Home / 13,663.35-18,856.13-8,356.50

Finding the Fourth Proportional to 13,663.35, 18,856.13 and 8,356.50

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Solution

The fourth proportional to 13,663.35, 18,856.13 and 8,356.50 is: 11,532.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,663.35 : 18,856.13 = 8,356.50 : x
  2. Step 2: Convert to fraction form
    13,663.35/18,856.13 = 8,356.50/x
  3. Step 3: Cross multiply
    13,663.35x = 18,856.13 × 8,356.50
  4. Step 4: Simplify right side
    13,663.35x = 157,571,250.35
  5. Step 5: Solve for x
    x = 157,571,250.35/13,663.35
  6. Step 6: Final answer
    x = 11,532.40

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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.