Home / 13,215.85-19,823.81-4,456.91

Finding the Fourth Proportional to 13,215.85, 19,823.81 and 4,456.91

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Solution

The fourth proportional to 13,215.85, 19,823.81 and 4,456.91 is: 6,685.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,215.85 : 19,823.81 = 4,456.91 : x
  2. Step 2: Convert to fraction form
    13,215.85/19,823.81 = 4,456.91/x
  3. Step 3: Cross multiply
    13,215.85x = 19,823.81 × 4,456.91
  4. Step 4: Simplify right side
    13,215.85x = 88,352,964.30
  5. Step 5: Solve for x
    x = 88,352,964.30/13,215.85
  6. Step 6: Final answer
    x = 6,685.38

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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.