Home / 11,479.40-15,840.36-6,444.18

Finding the Fourth Proportional to 11,479.40, 15,840.36 and 6,444.18

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Solution

The fourth proportional to 11,479.40, 15,840.36 and 6,444.18 is: 8,892.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,479.40 : 15,840.36 = 6,444.18 : x
  2. Step 2: Convert to fraction form
    11,479.40/15,840.36 = 6,444.18/x
  3. Step 3: Cross multiply
    11,479.40x = 15,840.36 × 6,444.18
  4. Step 4: Simplify right side
    11,479.40x = 102,078,019.68
  5. Step 5: Solve for x
    x = 102,078,019.68/11,479.40
  6. Step 6: Final answer
    x = 8,892.28

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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.