Home / 13,554.69-18,699.71-9,579.21

Finding the Fourth Proportional to 13,554.69, 18,699.71 and 9,579.21

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Solution

The fourth proportional to 13,554.69, 18,699.71 and 9,579.21 is: 13,215.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,554.69 : 18,699.71 = 9,579.21 : x
  2. Step 2: Convert to fraction form
    13,554.69/18,699.71 = 9,579.21/x
  3. Step 3: Cross multiply
    13,554.69x = 18,699.71 × 9,579.21
  4. Step 4: Simplify right side
    13,554.69x = 179,128,401.13
  5. Step 5: Solve for x
    x = 179,128,401.13/13,554.69
  6. Step 6: Final answer
    x = 13,215.23

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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.