Home / 13,091.86-18,066.68-7,123.55

Finding the Fourth Proportional to 13,091.86, 18,066.68 and 7,123.55

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Solution

The fourth proportional to 13,091.86, 18,066.68 and 7,123.55 is: 9,830.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,091.86 : 18,066.68 = 7,123.55 : x
  2. Step 2: Convert to fraction form
    13,091.86/18,066.68 = 7,123.55/x
  3. Step 3: Cross multiply
    13,091.86x = 18,066.68 × 7,123.55
  4. Step 4: Simplify right side
    13,091.86x = 128,698,799.08
  5. Step 5: Solve for x
    x = 128,698,799.08/13,091.86
  6. Step 6: Final answer
    x = 9,830.44

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Double scale
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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.