Home / 15,441.11-21,297.48-9,776.78

Finding the Fourth Proportional to 15,441.11, 21,297.48 and 9,776.78

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Solution

The fourth proportional to 15,441.11, 21,297.48 and 9,776.78 is: 13,484.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,441.11 : 21,297.48 = 9,776.78 : x
  2. Step 2: Convert to fraction form
    15,441.11/21,297.48 = 9,776.78/x
  3. Step 3: Cross multiply
    15,441.11x = 21,297.48 × 9,776.78
  4. Step 4: Simplify right side
    15,441.11x = 208,220,776.51
  5. Step 5: Solve for x
    x = 208,220,776.51/15,441.11
  6. Step 6: Final answer
    x = 13,484.83

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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.