Home / 15,480.50-21,362.51-8,406.77

Finding the Fourth Proportional to 15,480.50, 21,362.51 and 8,406.77

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Solution

The fourth proportional to 15,480.50, 21,362.51 and 8,406.77 is: 11,601.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,480.50 : 21,362.51 = 8,406.77 : x
  2. Step 2: Convert to fraction form
    15,480.50/21,362.51 = 8,406.77/x
  3. Step 3: Cross multiply
    15,480.50x = 21,362.51 × 8,406.77
  4. Step 4: Simplify right side
    15,480.50x = 179,589,622.40
  5. Step 5: Solve for x
    x = 179,589,622.40/15,480.50
  6. Step 6: Final answer
    x = 11,601.03

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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.