Home / 13,153.36-18,151.34-7,185.05

Finding the Fourth Proportional to 13,153.36, 18,151.34 and 7,185.05

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Solution

The fourth proportional to 13,153.36, 18,151.34 and 7,185.05 is: 9,915.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,153.36 : 18,151.34 = 7,185.05 : x
  2. Step 2: Convert to fraction form
    13,153.36/18,151.34 = 7,185.05/x
  3. Step 3: Cross multiply
    13,153.36x = 18,151.34 × 7,185.05
  4. Step 4: Simplify right side
    13,153.36x = 130,418,294.92
  5. Step 5: Solve for x
    x = 130,418,294.92/13,153.36
  6. Step 6: Final answer
    x = 9,915.21

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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.