Home / 28,995.50-39,957.77-20,597.42

Finding the Fourth Proportional to 28,995.50, 39,957.77 and 20,597.42

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Solution

The fourth proportional to 28,995.50, 39,957.77 and 20,597.42 is: 28,384.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,995.50 : 39,957.77 = 20,597.42 : x
  2. Step 2: Convert to fraction form
    28,995.50/39,957.77 = 20,597.42/x
  3. Step 3: Cross multiply
    28,995.50x = 39,957.77 × 20,597.42
  4. Step 4: Simplify right side
    28,995.50x = 823,027,122.34
  5. Step 5: Solve for x
    x = 823,027,122.34/28,995.50
  6. Step 6: Final answer
    x = 28,384.65

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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.