Home / 15,071.72-20,800.22-8,359.50

Finding the Fourth Proportional to 15,071.72, 20,800.22 and 8,359.50

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Solution

The fourth proportional to 15,071.72, 20,800.22 and 8,359.50 is: 11,536.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,071.72 : 20,800.22 = 8,359.50 : x
  2. Step 2: Convert to fraction form
    15,071.72/20,800.22 = 8,359.50/x
  3. Step 3: Cross multiply
    15,071.72x = 20,800.22 × 8,359.50
  4. Step 4: Simplify right side
    15,071.72x = 173,879,397.29
  5. Step 5: Solve for x
    x = 173,879,397.29/15,071.72
  6. Step 6: Final answer
    x = 11,536.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.