Home / 11,228.14-15,485.70-9,880.84

Finding the Fourth Proportional to 11,228.14, 15,485.70 and 9,880.84

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Solution

The fourth proportional to 11,228.14, 15,485.70 and 9,880.84 is: 13,627.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,228.14 : 15,485.70 = 9,880.84 : x
  2. Step 2: Convert to fraction form
    11,228.14/15,485.70 = 9,880.84/x
  3. Step 3: Cross multiply
    11,228.14x = 15,485.70 × 9,880.84
  4. Step 4: Simplify right side
    11,228.14x = 153,011,723.99
  5. Step 5: Solve for x
    x = 153,011,723.99/11,228.14
  6. Step 6: Final answer
    x = 13,627.52

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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.