Home / 11,320.08-15,621.84-6,284.40

Finding the Fourth Proportional to 11,320.08, 15,621.84 and 6,284.40

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Solution

The fourth proportional to 11,320.08, 15,621.84 and 6,284.40 is: 8,672.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,320.08 : 15,621.84 = 6,284.40 : x
  2. Step 2: Convert to fraction form
    11,320.08/15,621.84 = 6,284.40/x
  3. Step 3: Cross multiply
    11,320.08x = 15,621.84 × 6,284.40
  4. Step 4: Simplify right side
    11,320.08x = 98,173,891.30
  5. Step 5: Solve for x
    x = 98,173,891.30/11,320.08
  6. Step 6: Final answer
    x = 8,672.54

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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.