Home / 13,290.75-18,341.51-7,322.67

Finding the Fourth Proportional to 13,290.75, 18,341.51 and 7,322.67

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Solution

The fourth proportional to 13,290.75, 18,341.51 and 7,322.67 is: 10,105.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,290.75 : 18,341.51 = 7,322.67 : x
  2. Step 2: Convert to fraction form
    13,290.75/18,341.51 = 7,322.67/x
  3. Step 3: Cross multiply
    13,290.75x = 18,341.51 × 7,322.67
  4. Step 4: Simplify right side
    13,290.75x = 134,308,788.42
  5. Step 5: Solve for x
    x = 134,308,788.42/13,290.75
  6. Step 6: Final answer
    x = 10,105.43

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Double scale
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Similar ratio
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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.