Home / 13,130.41-18,119.81-7,162.13

Finding the Fourth Proportional to 13,130.41, 18,119.81 and 7,162.13

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Solution

The fourth proportional to 13,130.41, 18,119.81 and 7,162.13 is: 9,883.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,130.41 : 18,119.81 = 7,162.13 : x
  2. Step 2: Convert to fraction form
    13,130.41/18,119.81 = 7,162.13/x
  3. Step 3: Cross multiply
    13,130.41x = 18,119.81 × 7,162.13
  4. Step 4: Simplify right side
    13,130.41x = 129,776,308.39
  5. Step 5: Solve for x
    x = 129,776,308.39/13,130.41
  6. Step 6: Final answer
    x = 9,883.65

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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.