Home / 30,390.38-45,590.12-10,665.46

Finding the Fourth Proportional to 30,390.38, 45,590.12 and 10,665.46

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Solution

The fourth proportional to 30,390.38, 45,590.12 and 10,665.46 is: 15,999.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,390.38 : 45,590.12 = 10,665.46 : x
  2. Step 2: Convert to fraction form
    30,390.38/45,590.12 = 10,665.46/x
  3. Step 3: Cross multiply
    30,390.38x = 45,590.12 × 10,665.46
  4. Step 4: Simplify right side
    30,390.38x = 486,239,601.26
  5. Step 5: Solve for x
    x = 486,239,601.26/30,390.38
  6. Step 6: Final answer
    x = 15,999.79

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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.