Home / 30,210.87-41,686.38-16,780.89

Finding the Fourth Proportional to 30,210.87, 41,686.38 and 16,780.89

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Solution

The fourth proportional to 30,210.87, 41,686.38 and 16,780.89 is: 23,155.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,210.87 : 41,686.38 = 16,780.89 : x
  2. Step 2: Convert to fraction form
    30,210.87/41,686.38 = 16,780.89/x
  3. Step 3: Cross multiply
    30,210.87x = 41,686.38 × 16,780.89
  4. Step 4: Simplify right side
    30,210.87x = 699,534,557.28
  5. Step 5: Solve for x
    x = 699,534,557.28/30,210.87
  6. Step 6: Final answer
    x = 23,155.06

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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.