Home / 13,291.05-18,341.70-7,322.59

Finding the Fourth Proportional to 13,291.05, 18,341.70 and 7,322.59

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Solution

The fourth proportional to 13,291.05, 18,341.70 and 7,322.59 is: 10,105.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,291.05 : 18,341.70 = 7,322.59 : x
  2. Step 2: Convert to fraction form
    13,291.05/18,341.70 = 7,322.59/x
  3. Step 3: Cross multiply
    13,291.05x = 18,341.70 × 7,322.59
  4. Step 4: Simplify right side
    13,291.05x = 134,308,675.69
  5. Step 5: Solve for x
    x = 134,308,675.69/13,291.05
  6. Step 6: Final answer
    x = 10,105.20

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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.