Home / 20,312.22-30,478.95-8,313.27

Finding the Fourth Proportional to 20,312.22, 30,478.95 and 8,313.27

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Solution

The fourth proportional to 20,312.22, 30,478.95 and 8,313.27 is: 12,474.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,312.22 : 30,478.95 = 8,313.27 : x
  2. Step 2: Convert to fraction form
    20,312.22/30,478.95 = 8,313.27/x
  3. Step 3: Cross multiply
    20,312.22x = 30,478.95 × 8,313.27
  4. Step 4: Simplify right side
    20,312.22x = 253,379,839.38
  5. Step 5: Solve for x
    x = 253,379,839.38/20,312.22
  6. Step 6: Final answer
    x = 12,474.26

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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.