Home / 30,021.12-41,446.08-20,603.52

Finding the Fourth Proportional to 30,021.12, 41,446.08 and 20,603.52

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Solution

The fourth proportional to 30,021.12, 41,446.08 and 20,603.52 is: 28,444.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,021.12 : 41,446.08 = 20,603.52 : x
  2. Step 2: Convert to fraction form
    30,021.12/41,446.08 = 20,603.52/x
  3. Step 3: Cross multiply
    30,021.12x = 41,446.08 × 20,603.52
  4. Step 4: Simplify right side
    30,021.12x = 853,935,138.20
  5. Step 5: Solve for x
    x = 853,935,138.20/30,021.12
  6. Step 6: Final answer
    x = 28,444.48

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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.