Home / 28,932.48-39,904.92-21,000.96

Finding the Fourth Proportional to 28,932.48, 39,904.92 and 21,000.96

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Solution

The fourth proportional to 28,932.48, 39,904.92 and 21,000.96 is: 28,965.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,932.48 : 39,904.92 = 21,000.96 : x
  2. Step 2: Convert to fraction form
    28,932.48/39,904.92 = 21,000.96/x
  3. Step 3: Cross multiply
    28,932.48x = 39,904.92 × 21,000.96
  4. Step 4: Simplify right side
    28,932.48x = 838,041,628.72
  5. Step 5: Solve for x
    x = 838,041,628.72/28,932.48
  6. Step 6: Final answer
    x = 28,965.43

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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.