Home / 13,299.19-18,353.01-7,331.09

Finding the Fourth Proportional to 13,299.19, 18,353.01 and 7,331.09

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Solution

The fourth proportional to 13,299.19, 18,353.01 and 7,331.09 is: 10,116.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,299.19 : 18,353.01 = 7,331.09 : x
  2. Step 2: Convert to fraction form
    13,299.19/18,353.01 = 7,331.09/x
  3. Step 3: Cross multiply
    13,299.19x = 18,353.01 × 7,331.09
  4. Step 4: Simplify right side
    13,299.19x = 134,547,568.08
  5. Step 5: Solve for x
    x = 134,547,568.08/13,299.19
  6. Step 6: Final answer
    x = 10,116.97

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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.