Home / 21,300.52-31,962.68-8,829.76

Finding the Fourth Proportional to 21,300.52, 31,962.68 and 8,829.76

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Solution

The fourth proportional to 21,300.52, 31,962.68 and 8,829.76 is: 13,249.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,300.52 : 31,962.68 = 8,829.76 : x
  2. Step 2: Convert to fraction form
    21,300.52/31,962.68 = 8,829.76/x
  3. Step 3: Cross multiply
    21,300.52x = 31,962.68 × 8,829.76
  4. Step 4: Simplify right side
    21,300.52x = 282,222,793.36
  5. Step 5: Solve for x
    x = 282,222,793.36/21,300.52
  6. Step 6: Final answer
    x = 13,249.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.