Home / 13,519.28-20,285.40-6,590

Finding the Fourth Proportional to 13,519.28, 20,285.40 and 6,590

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Solution

The fourth proportional to 13,519.28, 20,285.40 and 6,590 is: 9,888.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,519.28 : 20,285.40 = 6,590 : x
  2. Step 2: Convert to fraction form
    13,519.28/20,285.40 = 6,590/x
  3. Step 3: Cross multiply
    13,519.28x = 20,285.40 × 6,590
  4. Step 4: Simplify right side
    13,519.28x = 133,680,786.00
  5. Step 5: Solve for x
    x = 133,680,786.00/13,519.28
  6. Step 6: Final answer
    x = 9,888.16

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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.