Home / 30,210.30-41,690.70-16,781.72

Finding the Fourth Proportional to 30,210.30, 41,690.70 and 16,781.72

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Solution

The fourth proportional to 30,210.30, 41,690.70 and 16,781.72 is: 23,159.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,210.30 : 41,690.70 = 16,781.72 : x
  2. Step 2: Convert to fraction form
    30,210.30/41,690.70 = 16,781.72/x
  3. Step 3: Cross multiply
    30,210.30x = 41,690.70 × 16,781.72
  4. Step 4: Simplify right side
    30,210.30x = 699,641,445.55
  5. Step 5: Solve for x
    x = 699,641,445.55/30,210.30
  6. Step 6: Final answer
    x = 23,159.04

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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.