Home / 30,147.50-41,603.55-16,720.81

Finding the Fourth Proportional to 30,147.50, 41,603.55 and 16,720.81

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Solution

The fourth proportional to 30,147.50, 41,603.55 and 16,720.81 is: 23,074.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,147.50 : 41,603.55 = 16,720.81 : x
  2. Step 2: Convert to fraction form
    30,147.50/41,603.55 = 16,720.81/x
  3. Step 3: Cross multiply
    30,147.50x = 41,603.55 × 16,720.81
  4. Step 4: Simplify right side
    30,147.50x = 695,645,054.88
  5. Step 5: Solve for x
    x = 695,645,054.88/30,147.50
  6. Step 6: Final answer
    x = 23,074.72

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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.