Home / 21,932.64-30,269.52-15,216.48

Finding the Fourth Proportional to 21,932.64, 30,269.52 and 15,216.48

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Solution

The fourth proportional to 21,932.64, 30,269.52 and 15,216.48 is: 21,000.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,932.64 : 30,269.52 = 15,216.48 : x
  2. Step 2: Convert to fraction form
    21,932.64/30,269.52 = 15,216.48/x
  3. Step 3: Cross multiply
    21,932.64x = 30,269.52 × 15,216.48
  4. Step 4: Simplify right side
    21,932.64x = 460,595,545.69
  5. Step 5: Solve for x
    x = 460,595,545.69/21,932.64
  6. Step 6: Final answer
    x = 21,000.46

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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.