Home / 15,678.52-21,628.65-11,422.96

Finding the Fourth Proportional to 15,678.52, 21,628.65 and 11,422.96

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Solution

The fourth proportional to 15,678.52, 21,628.65 and 11,422.96 is: 15,758.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,678.52 : 21,628.65 = 11,422.96 : x
  2. Step 2: Convert to fraction form
    15,678.52/21,628.65 = 11,422.96/x
  3. Step 3: Cross multiply
    15,678.52x = 21,628.65 × 11,422.96
  4. Step 4: Simplify right side
    15,678.52x = 247,063,203.80
  5. Step 5: Solve for x
    x = 247,063,203.80/15,678.52
  6. Step 6: Final answer
    x = 15,758.07

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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.