Home / 13,612.32-18,786.56-7,645.91

Finding the Fourth Proportional to 13,612.32, 18,786.56 and 7,645.91

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Solution

The fourth proportional to 13,612.32, 18,786.56 and 7,645.91 is: 10,552.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,612.32 : 18,786.56 = 7,645.91 : x
  2. Step 2: Convert to fraction form
    13,612.32/18,786.56 = 7,645.91/x
  3. Step 3: Cross multiply
    13,612.32x = 18,786.56 × 7,645.91
  4. Step 4: Simplify right side
    13,612.32x = 143,640,214.81
  5. Step 5: Solve for x
    x = 143,640,214.81/13,612.32
  6. Step 6: Final answer
    x = 10,552.22

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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.