Home / 20,439.34-28,205.42-11,941.93

Finding the Fourth Proportional to 20,439.34, 28,205.42 and 11,941.93

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Solution

The fourth proportional to 20,439.34, 28,205.42 and 11,941.93 is: 16,479.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,439.34 : 28,205.42 = 11,941.93 : x
  2. Step 2: Convert to fraction form
    20,439.34/28,205.42 = 11,941.93/x
  3. Step 3: Cross multiply
    20,439.34x = 28,205.42 × 11,941.93
  4. Step 4: Simplify right side
    20,439.34x = 336,827,126.81
  5. Step 5: Solve for x
    x = 336,827,126.81/20,439.34
  6. Step 6: Final answer
    x = 16,479.36

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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.