Home / 13,153.59-18,151.65-7,185.42

Finding the Fourth Proportional to 13,153.59, 18,151.65 and 7,185.42

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Solution

The fourth proportional to 13,153.59, 18,151.65 and 7,185.42 is: 9,915.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,153.59 : 18,151.65 = 7,185.42 : x
  2. Step 2: Convert to fraction form
    13,153.59/18,151.65 = 7,185.42/x
  3. Step 3: Cross multiply
    13,153.59x = 18,151.65 × 7,185.42
  4. Step 4: Simplify right side
    13,153.59x = 130,427,228.94
  5. Step 5: Solve for x
    x = 130,427,228.94/13,153.59
  6. Step 6: Final answer
    x = 9,915.71

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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.