Home / 11,451.36-15,802.20-6,416.40

Finding the Fourth Proportional to 11,451.36, 15,802.20 and 6,416.40

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Solution

The fourth proportional to 11,451.36, 15,802.20 and 6,416.40 is: 8,854.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,451.36 : 15,802.20 = 6,416.40 : x
  2. Step 2: Convert to fraction form
    11,451.36/15,802.20 = 6,416.40/x
  3. Step 3: Cross multiply
    11,451.36x = 15,802.20 × 6,416.40
  4. Step 4: Simplify right side
    11,451.36x = 101,393,236.08
  5. Step 5: Solve for x
    x = 101,393,236.08/11,451.36
  6. Step 6: Final answer
    x = 8,854.25

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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.