Home / 13,518.96-18,656.88-7,550.76

Finding the Fourth Proportional to 13,518.96, 18,656.88 and 7,550.76

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Solution

The fourth proportional to 13,518.96, 18,656.88 and 7,550.76 is: 10,420.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,518.96 : 18,656.88 = 7,550.76 : x
  2. Step 2: Convert to fraction form
    13,518.96/18,656.88 = 7,550.76/x
  3. Step 3: Cross multiply
    13,518.96x = 18,656.88 × 7,550.76
  4. Step 4: Simplify right side
    13,518.96x = 140,873,623.23
  5. Step 5: Solve for x
    x = 140,873,623.23/13,518.96
  6. Step 6: Final answer
    x = 10,420.45

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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.