Home / 15,341.21-21,170.39-8,627.12

Finding the Fourth Proportional to 15,341.21, 21,170.39 and 8,627.12

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Solution

The fourth proportional to 15,341.21, 21,170.39 and 8,627.12 is: 11,905.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,341.21 : 21,170.39 = 8,627.12 : x
  2. Step 2: Convert to fraction form
    15,341.21/21,170.39 = 8,627.12/x
  3. Step 3: Cross multiply
    15,341.21x = 21,170.39 × 8,627.12
  4. Step 4: Simplify right side
    15,341.21x = 182,639,345.99
  5. Step 5: Solve for x
    x = 182,639,345.99/15,341.21
  6. Step 6: Final answer
    x = 11,905.15

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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.