Home / 30,429.18-45,649.16-13,788.54

Finding the Fourth Proportional to 30,429.18, 45,649.16 and 13,788.54

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Solution

The fourth proportional to 30,429.18, 45,649.16 and 13,788.54 is: 20,685.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,429.18 : 45,649.16 = 13,788.54 : x
  2. Step 2: Convert to fraction form
    30,429.18/45,649.16 = 13,788.54/x
  3. Step 3: Cross multiply
    30,429.18x = 45,649.16 × 13,788.54
  4. Step 4: Simplify right side
    30,429.18x = 629,435,199.68
  5. Step 5: Solve for x
    x = 629,435,199.68/30,429.18
  6. Step 6: Final answer
    x = 20,685.25

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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.