Home / 10,918.98-16,378.56-3,899.32

Finding the Fourth Proportional to 10,918.98, 16,378.56 and 3,899.32

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Solution

The fourth proportional to 10,918.98, 16,378.56 and 3,899.32 is: 5,849.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,918.98 : 16,378.56 = 3,899.32 : x
  2. Step 2: Convert to fraction form
    10,918.98/16,378.56 = 3,899.32/x
  3. Step 3: Cross multiply
    10,918.98x = 16,378.56 × 3,899.32
  4. Step 4: Simplify right side
    10,918.98x = 63,865,246.58
  5. Step 5: Solve for x
    x = 63,865,246.58/10,918.98
  6. Step 6: Final answer
    x = 5,849.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.