Home / 11,907.32-16,428.75-9,381.60

Finding the Fourth Proportional to 11,907.32, 16,428.75 and 9,381.60

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Solution

The fourth proportional to 11,907.32, 16,428.75 and 9,381.60 is: 12,943.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,907.32 : 16,428.75 = 9,381.60 : x
  2. Step 2: Convert to fraction form
    11,907.32/16,428.75 = 9,381.60/x
  3. Step 3: Cross multiply
    11,907.32x = 16,428.75 × 9,381.60
  4. Step 4: Simplify right side
    11,907.32x = 154,127,961
  5. Step 5: Solve for x
    x = 154,127,961/11,907.32
  6. Step 6: Final answer
    x = 12,943.97

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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.