Home / 20,439.31-28,206.36-11,941.93

Finding the Fourth Proportional to 20,439.31, 28,206.36 and 11,941.93

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Solution

The fourth proportional to 20,439.31, 28,206.36 and 11,941.93 is: 16,479.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,439.31 : 28,206.36 = 11,941.93 : x
  2. Step 2: Convert to fraction form
    20,439.31/28,206.36 = 11,941.93/x
  3. Step 3: Cross multiply
    20,439.31x = 28,206.36 × 11,941.93
  4. Step 4: Simplify right side
    20,439.31x = 336,838,376.67
  5. Step 5: Solve for x
    x = 336,838,376.67/20,439.31
  6. Step 6: Final answer
    x = 16,479.93

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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.