Home / 20,391.80-30,587.84-5,602.28

Finding the Fourth Proportional to 20,391.80, 30,587.84 and 5,602.28

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Solution

The fourth proportional to 20,391.80, 30,587.84 and 5,602.28 is: 8,403.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,391.80 : 30,587.84 = 5,602.28 : x
  2. Step 2: Convert to fraction form
    20,391.80/30,587.84 = 5,602.28/x
  3. Step 3: Cross multiply
    20,391.80x = 30,587.84 × 5,602.28
  4. Step 4: Simplify right side
    20,391.80x = 171,361,644.28
  5. Step 5: Solve for x
    x = 171,361,644.28/20,391.80
  6. Step 6: Final answer
    x = 8,403.46

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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.