Home / 20,751.12-28,636.74-11,798.46

Finding the Fourth Proportional to 20,751.12, 28,636.74 and 11,798.46

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Solution

The fourth proportional to 20,751.12, 28,636.74 and 11,798.46 is: 16,281.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,751.12 : 28,636.74 = 11,798.46 : x
  2. Step 2: Convert to fraction form
    20,751.12/28,636.74 = 11,798.46/x
  3. Step 3: Cross multiply
    20,751.12x = 28,636.74 × 11,798.46
  4. Step 4: Simplify right side
    20,751.12x = 337,869,431.42
  5. Step 5: Solve for x
    x = 337,869,431.42/20,751.12
  6. Step 6: Final answer
    x = 16,281.99

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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.