Home / 19,790.90-27,311.88-10,838.78

Finding the Fourth Proportional to 19,790.90, 27,311.88 and 10,838.78

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Solution

The fourth proportional to 19,790.90, 27,311.88 and 10,838.78 is: 14,957.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,790.90 : 27,311.88 = 10,838.78 : x
  2. Step 2: Convert to fraction form
    19,790.90/27,311.88 = 10,838.78/x
  3. Step 3: Cross multiply
    19,790.90x = 27,311.88 × 10,838.78
  4. Step 4: Simplify right side
    19,790.90x = 296,027,458.71
  5. Step 5: Solve for x
    x = 296,027,458.71/19,790.90
  6. Step 6: Final answer
    x = 14,957.76

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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.