Home / 9,864.36-13,612.86-5,388.21

Finding the Fourth Proportional to 9,864.36, 13,612.86 and 5,388.21

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Solution

The fourth proportional to 9,864.36, 13,612.86 and 5,388.21 is: 7,435.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,864.36 : 13,612.86 = 5,388.21 : x
  2. Step 2: Convert to fraction form
    9,864.36/13,612.86 = 5,388.21/x
  3. Step 3: Cross multiply
    9,864.36x = 13,612.86 × 5,388.21
  4. Step 4: Simplify right side
    9,864.36x = 73,348,948.38
  5. Step 5: Solve for x
    x = 73,348,948.38/9,864.36
  6. Step 6: Final answer
    x = 7,435.75

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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.