Home / 13,291.23-18,341.96-7,322.78

Finding the Fourth Proportional to 13,291.23, 18,341.96 and 7,322.78

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Solution

The fourth proportional to 13,291.23, 18,341.96 and 7,322.78 is: 10,105.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,291.23 : 18,341.96 = 7,322.78 : x
  2. Step 2: Convert to fraction form
    13,291.23/18,341.96 = 7,322.78/x
  3. Step 3: Cross multiply
    13,291.23x = 18,341.96 × 7,322.78
  4. Step 4: Simplify right side
    13,291.23x = 134,314,009.53
  5. Step 5: Solve for x
    x = 134,314,009.53/13,291.23
  6. Step 6: Final answer
    x = 10,105.46

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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.