Home / 30,278.70-45,405.90-11,552.34

Finding the Fourth Proportional to 30,278.70, 45,405.90 and 11,552.34

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Solution

The fourth proportional to 30,278.70, 45,405.90 and 11,552.34 is: 17,323.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,278.70 : 45,405.90 = 11,552.34 : x
  2. Step 2: Convert to fraction form
    30,278.70/45,405.90 = 11,552.34/x
  3. Step 3: Cross multiply
    30,278.70x = 45,405.90 × 11,552.34
  4. Step 4: Simplify right side
    30,278.70x = 524,544,394.81
  5. Step 5: Solve for x
    x = 524,544,394.81/30,278.70
  6. Step 6: Final answer
    x = 17,323.87

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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.