Home / 13,040.55-17,998.51-8,564.19

Finding the Fourth Proportional to 13,040.55, 17,998.51 and 8,564.19

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Solution

The fourth proportional to 13,040.55, 17,998.51 and 8,564.19 is: 11,820.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,040.55 : 17,998.51 = 8,564.19 : x
  2. Step 2: Convert to fraction form
    13,040.55/17,998.51 = 8,564.19/x
  3. Step 3: Cross multiply
    13,040.55x = 17,998.51 × 8,564.19
  4. Step 4: Simplify right side
    13,040.55x = 154,142,569.36
  5. Step 5: Solve for x
    x = 154,142,569.36/13,040.55
  6. Step 6: Final answer
    x = 11,820.25

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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.