Home / 11,920.95-16,453.90-6,888.10

Finding the Fourth Proportional to 11,920.95, 16,453.90 and 6,888.10

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Solution

The fourth proportional to 11,920.95, 16,453.90 and 6,888.10 is: 9,507.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,920.95 : 16,453.90 = 6,888.10 : x
  2. Step 2: Convert to fraction form
    11,920.95/16,453.90 = 6,888.10/x
  3. Step 3: Cross multiply
    11,920.95x = 16,453.90 × 6,888.10
  4. Step 4: Simplify right side
    11,920.95x = 113,336,026.32
  5. Step 5: Solve for x
    x = 113,336,026.32/11,920.95
  6. Step 6: Final answer
    x = 9,507.30

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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.