Home / 30,155.90-41,615.37-16,543.85

Finding the Fourth Proportional to 30,155.90, 41,615.37 and 16,543.85

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Solution

The fourth proportional to 30,155.90, 41,615.37 and 16,543.85 is: 22,830.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,155.90 : 41,615.37 = 16,543.85 : x
  2. Step 2: Convert to fraction form
    30,155.90/41,615.37 = 16,543.85/x
  3. Step 3: Cross multiply
    30,155.90x = 41,615.37 × 16,543.85
  4. Step 4: Simplify right side
    30,155.90x = 688,478,230.90
  5. Step 5: Solve for x
    x = 688,478,230.90/30,155.90
  6. Step 6: Final answer
    x = 22,830.63

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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.