Home / 13,159.38-18,154.47-8,620.77

Finding the Fourth Proportional to 13,159.38, 18,154.47 and 8,620.77

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Solution

The fourth proportional to 13,159.38, 18,154.47 and 8,620.77 is: 11,893.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,159.38 : 18,154.47 = 8,620.77 : x
  2. Step 2: Convert to fraction form
    13,159.38/18,154.47 = 8,620.77/x
  3. Step 3: Cross multiply
    13,159.38x = 18,154.47 × 8,620.77
  4. Step 4: Simplify right side
    13,159.38x = 156,505,510.34
  5. Step 5: Solve for x
    x = 156,505,510.34/13,159.38
  6. Step 6: Final answer
    x = 11,893.08

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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.