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Finding the Fourth Proportional to 10,918.36, 15,068.98 and 6,671.88

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Solution

The fourth proportional to 10,918.36, 15,068.98 and 6,671.88 is: 9,208.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,918.36 : 15,068.98 = 6,671.88 : x
  2. Step 2: Convert to fraction form
    10,918.36/15,068.98 = 6,671.88/x
  3. Step 3: Cross multiply
    10,918.36x = 15,068.98 × 6,671.88
  4. Step 4: Simplify right side
    10,918.36x = 100,538,392.92
  5. Step 5: Solve for x
    x = 100,538,392.92/10,918.36
  6. Step 6: Final answer
    x = 9,208.20

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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.