Home / 15,143.52-20,903.76-11,196.40

Finding the Fourth Proportional to 15,143.52, 20,903.76 and 11,196.40

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Solution

The fourth proportional to 15,143.52, 20,903.76 and 11,196.40 is: 15,455.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,143.52 : 20,903.76 = 11,196.40 : x
  2. Step 2: Convert to fraction form
    15,143.52/20,903.76 = 11,196.40/x
  3. Step 3: Cross multiply
    15,143.52x = 20,903.76 × 11,196.40
  4. Step 4: Simplify right side
    15,143.52x = 234,046,858.46
  5. Step 5: Solve for x
    x = 234,046,858.46/15,143.52
  6. Step 6: Final answer
    x = 15,455.25

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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.