Home / 20,803.04-28,709.33-12,310.19

Finding the Fourth Proportional to 20,803.04, 28,709.33 and 12,310.19

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Solution

The fourth proportional to 20,803.04, 28,709.33 and 12,310.19 is: 16,988.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,803.04 : 28,709.33 = 12,310.19 : x
  2. Step 2: Convert to fraction form
    20,803.04/28,709.33 = 12,310.19/x
  3. Step 3: Cross multiply
    20,803.04x = 28,709.33 × 12,310.19
  4. Step 4: Simplify right side
    20,803.04x = 353,417,101.98
  5. Step 5: Solve for x
    x = 353,417,101.98/20,803.04
  6. Step 6: Final answer
    x = 16,988.73

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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.