Home / 13,721.61-20,615.25-8,800.86

Finding the Fourth Proportional to 13,721.61, 20,615.25 and 8,800.86

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Solution

The fourth proportional to 13,721.61, 20,615.25 and 8,800.86 is: 13,222.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,721.61 : 20,615.25 = 8,800.86 : x
  2. Step 2: Convert to fraction form
    13,721.61/20,615.25 = 8,800.86/x
  3. Step 3: Cross multiply
    13,721.61x = 20,615.25 × 8,800.86
  4. Step 4: Simplify right side
    13,721.61x = 181,431,898.71
  5. Step 5: Solve for x
    x = 181,431,898.71/13,721.61
  6. Step 6: Final answer
    x = 13,222.35

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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.