Home / 13,038.09-17,987.85-8,564.25

Finding the Fourth Proportional to 13,038.09, 17,987.85 and 8,564.25

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Solution

The fourth proportional to 13,038.09, 17,987.85 and 8,564.25 is: 11,815.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,038.09 : 17,987.85 = 8,564.25 : x
  2. Step 2: Convert to fraction form
    13,038.09/17,987.85 = 8,564.25/x
  3. Step 3: Cross multiply
    13,038.09x = 17,987.85 × 8,564.25
  4. Step 4: Simplify right side
    13,038.09x = 154,052,444.36
  5. Step 5: Solve for x
    x = 154,052,444.36/13,038.09
  6. Step 6: Final answer
    x = 11,815.57

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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.