Home / 15,187.97-20,948.08-11,153.53

Finding the Fourth Proportional to 15,187.97, 20,948.08 and 11,153.53

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Solution

The fourth proportional to 15,187.97, 20,948.08 and 11,153.53 is: 15,383.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,187.97 : 20,948.08 = 11,153.53 : x
  2. Step 2: Convert to fraction form
    15,187.97/20,948.08 = 11,153.53/x
  3. Step 3: Cross multiply
    15,187.97x = 20,948.08 × 11,153.53
  4. Step 4: Simplify right side
    15,187.97x = 233,645,038.72
  5. Step 5: Solve for x
    x = 233,645,038.72/15,187.97
  6. Step 6: Final answer
    x = 15,383.56

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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.