Home / 20,641.44-28,484.88-11,688.84

Finding the Fourth Proportional to 20,641.44, 28,484.88 and 11,688.84

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Solution

The fourth proportional to 20,641.44, 28,484.88 and 11,688.84 is: 16,130.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,641.44 : 28,484.88 = 11,688.84 : x
  2. Step 2: Convert to fraction form
    20,641.44/28,484.88 = 11,688.84/x
  3. Step 3: Cross multiply
    20,641.44x = 28,484.88 × 11,688.84
  4. Step 4: Simplify right side
    20,641.44x = 332,955,204.74
  5. Step 5: Solve for x
    x = 332,955,204.74/20,641.44
  6. Step 6: Final answer
    x = 16,130.43

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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.