Home / 13,335.21-18,402.96-7,960.77

Finding the Fourth Proportional to 13,335.21, 18,402.96 and 7,960.77

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Solution

The fourth proportional to 13,335.21, 18,402.96 and 7,960.77 is: 10,986.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,335.21 : 18,402.96 = 7,960.77 : x
  2. Step 2: Convert to fraction form
    13,335.21/18,402.96 = 7,960.77/x
  3. Step 3: Cross multiply
    13,335.21x = 18,402.96 × 7,960.77
  4. Step 4: Simplify right side
    13,335.21x = 146,501,668.68
  5. Step 5: Solve for x
    x = 146,501,668.68/13,335.21
  6. Step 6: Final answer
    x = 10,986.08

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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.