Home / 11,218.88-15,485.28-7,503.68

Finding the Fourth Proportional to 11,218.88, 15,485.28 and 7,503.68

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Solution

The fourth proportional to 11,218.88, 15,485.28 and 7,503.68 is: 10,357.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,218.88 : 15,485.28 = 7,503.68 : x
  2. Step 2: Convert to fraction form
    11,218.88/15,485.28 = 7,503.68/x
  3. Step 3: Cross multiply
    11,218.88x = 15,485.28 × 7,503.68
  4. Step 4: Simplify right side
    11,218.88x = 116,196,585.83
  5. Step 5: Solve for x
    x = 116,196,585.83/11,218.88
  6. Step 6: Final answer
    x = 10,357.24

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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.