Home / 11,309.19-15,560.80-9,285.15

Finding the Fourth Proportional to 11,309.19, 15,560.80 and 9,285.15

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Solution

The fourth proportional to 11,309.19, 15,560.80 and 9,285.15 is: 12,775.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,309.19 : 15,560.80 = 9,285.15 : x
  2. Step 2: Convert to fraction form
    11,309.19/15,560.80 = 9,285.15/x
  3. Step 3: Cross multiply
    11,309.19x = 15,560.80 × 9,285.15
  4. Step 4: Simplify right side
    11,309.19x = 144,484,362.12
  5. Step 5: Solve for x
    x = 144,484,362.12/11,309.19
  6. Step 6: Final answer
    x = 12,775.84

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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.