Home / 13,618.29-20,417.06-7,040.28

Finding the Fourth Proportional to 13,618.29, 20,417.06 and 7,040.28

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Solution

The fourth proportional to 13,618.29, 20,417.06 and 7,040.28 is: 10,555.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,618.29 : 20,417.06 = 7,040.28 : x
  2. Step 2: Convert to fraction form
    13,618.29/20,417.06 = 7,040.28/x
  3. Step 3: Cross multiply
    13,618.29x = 20,417.06 × 7,040.28
  4. Step 4: Simplify right side
    13,618.29x = 143,741,783.98
  5. Step 5: Solve for x
    x = 143,741,783.98/13,618.29
  6. Step 6: Final answer
    x = 10,555.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.