Home / 30,155.68-45,237.77-10,429.55

Finding the Fourth Proportional to 30,155.68, 45,237.77 and 10,429.55

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Solution

The fourth proportional to 30,155.68, 45,237.77 and 10,429.55 is: 15,645.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,155.68 : 45,237.77 = 10,429.55 : x
  2. Step 2: Convert to fraction form
    30,155.68/45,237.77 = 10,429.55/x
  3. Step 3: Cross multiply
    30,155.68x = 45,237.77 × 10,429.55
  4. Step 4: Simplify right side
    30,155.68x = 471,809,584.10
  5. Step 5: Solve for x
    x = 471,809,584.10/30,155.68
  6. Step 6: Final answer
    x = 15,645.79

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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.