Home / 13,160.36-18,161.53-7,192.28

Finding the Fourth Proportional to 13,160.36, 18,161.53 and 7,192.28

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Solution

The fourth proportional to 13,160.36, 18,161.53 and 7,192.28 is: 9,925.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,160.36 : 18,161.53 = 7,192.28 : x
  2. Step 2: Convert to fraction form
    13,160.36/18,161.53 = 7,192.28/x
  3. Step 3: Cross multiply
    13,160.36x = 18,161.53 × 7,192.28
  4. Step 4: Simplify right side
    13,160.36x = 130,622,718.18
  5. Step 5: Solve for x
    x = 130,622,718.18/13,160.36
  6. Step 6: Final answer
    x = 9,925.47

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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.