Home / 13,488.50-20,235.99-4,254.50

Finding the Fourth Proportional to 13,488.50, 20,235.99 and 4,254.50

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Solution

The fourth proportional to 13,488.50, 20,235.99 and 4,254.50 is: 6,382.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,488.50 : 20,235.99 = 4,254.50 : x
  2. Step 2: Convert to fraction form
    13,488.50/20,235.99 = 4,254.50/x
  3. Step 3: Cross multiply
    13,488.50x = 20,235.99 × 4,254.50
  4. Step 4: Simplify right side
    13,488.50x = 86,094,019.46
  5. Step 5: Solve for x
    x = 86,094,019.46/13,488.50
  6. Step 6: Final answer
    x = 6,382.77

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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.