Home / 13,595.20-18,755.36-8,878.40

Finding the Fourth Proportional to 13,595.20, 18,755.36 and 8,878.40

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Solution

The fourth proportional to 13,595.20, 18,755.36 and 8,878.40 is: 12,248.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,595.20 : 18,755.36 = 8,878.40 : x
  2. Step 2: Convert to fraction form
    13,595.20/18,755.36 = 8,878.40/x
  3. Step 3: Cross multiply
    13,595.20x = 18,755.36 × 8,878.40
  4. Step 4: Simplify right side
    13,595.20x = 166,517,588.22
  5. Step 5: Solve for x
    x = 166,517,588.22/13,595.20
  6. Step 6: Final answer
    x = 12,248.26

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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.