Home / 13,541.08-20,299.28-5,215.76

Finding the Fourth Proportional to 13,541.08, 20,299.28 and 5,215.76

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Solution

The fourth proportional to 13,541.08, 20,299.28 and 5,215.76 is: 7,818.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,541.08 : 20,299.28 = 5,215.76 : x
  2. Step 2: Convert to fraction form
    13,541.08/20,299.28 = 5,215.76/x
  3. Step 3: Cross multiply
    13,541.08x = 20,299.28 × 5,215.76
  4. Step 4: Simplify right side
    13,541.08x = 105,876,172.65
  5. Step 5: Solve for x
    x = 105,876,172.65/13,541.08
  6. Step 6: Final answer
    x = 7,818.89

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1.5x scale

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.