Home / 9,919.16-13,688.58-5,442.84

Finding the Fourth Proportional to 9,919.16, 13,688.58 and 5,442.84

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Solution

The fourth proportional to 9,919.16, 13,688.58 and 5,442.84 is: 7,511.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,919.16 : 13,688.58 = 5,442.84 : x
  2. Step 2: Convert to fraction form
    9,919.16/13,688.58 = 5,442.84/x
  3. Step 3: Cross multiply
    9,919.16x = 13,688.58 × 5,442.84
  4. Step 4: Simplify right side
    9,919.16x = 74,504,750.77
  5. Step 5: Solve for x
    x = 74,504,750.77/9,919.16
  6. Step 6: Final answer
    x = 7,511.20

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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.