Home / 30,613.52-42,235.79-20,009.27

Finding the Fourth Proportional to 30,613.52, 42,235.79 and 20,009.27

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Solution

The fourth proportional to 30,613.52, 42,235.79 and 20,009.27 is: 27,605.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,613.52 : 42,235.79 = 20,009.27 : x
  2. Step 2: Convert to fraction form
    30,613.52/42,235.79 = 20,009.27/x
  3. Step 3: Cross multiply
    30,613.52x = 42,235.79 × 20,009.27
  4. Step 4: Simplify right side
    30,613.52x = 845,107,014.55
  5. Step 5: Solve for x
    x = 845,107,014.55/30,613.52
  6. Step 6: Final answer
    x = 27,605.68

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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.