Home / 11,907.40-16,431.60-6,602.20

Finding the Fourth Proportional to 11,907.40, 16,431.60 and 6,602.20

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Solution

The fourth proportional to 11,907.40, 16,431.60 and 6,602.20 is: 9,110.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,907.40 : 16,431.60 = 6,602.20 : x
  2. Step 2: Convert to fraction form
    11,907.40/16,431.60 = 6,602.20/x
  3. Step 3: Cross multiply
    11,907.40x = 16,431.60 × 6,602.20
  4. Step 4: Simplify right side
    11,907.40x = 108,484,709.52
  5. Step 5: Solve for x
    x = 108,484,709.52/11,907.40
  6. Step 6: Final answer
    x = 9,110.70

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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.