Home / 13,402.08-18,482.77-8,366.76

Finding the Fourth Proportional to 13,402.08, 18,482.77 and 8,366.76

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Solution

The fourth proportional to 13,402.08, 18,482.77 and 8,366.76 is: 11,538.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,402.08 : 18,482.77 = 8,366.76 : x
  2. Step 2: Convert to fraction form
    13,402.08/18,482.77 = 8,366.76/x
  3. Step 3: Cross multiply
    13,402.08x = 18,482.77 × 8,366.76
  4. Step 4: Simplify right side
    13,402.08x = 154,640,858.89
  5. Step 5: Solve for x
    x = 154,640,858.89/13,402.08
  6. Step 6: Final answer
    x = 11,538.58

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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.