Home / 13,328.12-19,988.64-4,442.02

Finding the Fourth Proportional to 13,328.12, 19,988.64 and 4,442.02

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Solution

The fourth proportional to 13,328.12, 19,988.64 and 4,442.02 is: 6,661.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,328.12 : 19,988.64 = 4,442.02 : x
  2. Step 2: Convert to fraction form
    13,328.12/19,988.64 = 4,442.02/x
  3. Step 3: Cross multiply
    13,328.12x = 19,988.64 × 4,442.02
  4. Step 4: Simplify right side
    13,328.12x = 88,789,938.65
  5. Step 5: Solve for x
    x = 88,789,938.65/13,328.12
  6. Step 6: Final answer
    x = 6,661.85

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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.