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Finding the Fourth Proportional to 11,907.16, 16,432.08 and 6,602.20

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Solution

The fourth proportional to 11,907.16, 16,432.08 and 6,602.20 is: 9,111.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,907.16 : 16,432.08 = 6,602.20 : x
  2. Step 2: Convert to fraction form
    11,907.16/16,432.08 = 6,602.20/x
  3. Step 3: Cross multiply
    11,907.16x = 16,432.08 × 6,602.20
  4. Step 4: Simplify right side
    11,907.16x = 108,487,878.58
  5. Step 5: Solve for x
    x = 108,487,878.58/11,907.16
  6. Step 6: Final answer
    x = 9,111.15

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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.