Home / 9,919.12-14,857.80-4,719.76

Finding the Fourth Proportional to 9,919.12, 14,857.80 and 4,719.76

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Solution

The fourth proportional to 9,919.12, 14,857.80 and 4,719.76 is: 7,069.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,919.12 : 14,857.80 = 4,719.76 : x
  2. Step 2: Convert to fraction form
    9,919.12/14,857.80 = 4,719.76/x
  3. Step 3: Cross multiply
    9,919.12x = 14,857.80 × 4,719.76
  4. Step 4: Simplify right side
    9,919.12x = 70,125,250.13
  5. Step 5: Solve for x
    x = 70,125,250.13/9,919.12
  6. Step 6: Final answer
    x = 7,069.70

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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.