Home / 13,627.11-18,819.69-9,389.19

Finding the Fourth Proportional to 13,627.11, 18,819.69 and 9,389.19

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Solution

The fourth proportional to 13,627.11, 18,819.69 and 9,389.19 is: 12,966.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,627.11 : 18,819.69 = 9,389.19 : x
  2. Step 2: Convert to fraction form
    13,627.11/18,819.69 = 9,389.19/x
  3. Step 3: Cross multiply
    13,627.11x = 18,819.69 × 9,389.19
  4. Step 4: Simplify right side
    13,627.11x = 176,701,504.11
  5. Step 5: Solve for x
    x = 176,701,504.11/13,627.11
  6. Step 6: Final answer
    x = 12,966.91

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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.