Home / 11,154.30-15,392.39-6,440.10

Finding the Fourth Proportional to 11,154.30, 15,392.39 and 6,440.10

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Solution

The fourth proportional to 11,154.30, 15,392.39 and 6,440.10 is: 8,887.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,154.30 : 15,392.39 = 6,440.10 : x
  2. Step 2: Convert to fraction form
    11,154.30/15,392.39 = 6,440.10/x
  3. Step 3: Cross multiply
    11,154.30x = 15,392.39 × 6,440.10
  4. Step 4: Simplify right side
    11,154.30x = 99,128,530.84
  5. Step 5: Solve for x
    x = 99,128,530.84/11,154.30
  6. Step 6: Final answer
    x = 8,887.02

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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.