Home / 13,161.24-18,162.47-7,192.91

Finding the Fourth Proportional to 13,161.24, 18,162.47 and 7,192.91

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Solution

The fourth proportional to 13,161.24, 18,162.47 and 7,192.91 is: 9,926.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,161.24 : 18,162.47 = 7,192.91 : x
  2. Step 2: Convert to fraction form
    13,161.24/18,162.47 = 7,192.91/x
  3. Step 3: Cross multiply
    13,161.24x = 18,162.47 × 7,192.91
  4. Step 4: Simplify right side
    13,161.24x = 130,640,946.34
  5. Step 5: Solve for x
    x = 130,640,946.34/13,161.24
  6. Step 6: Final answer
    x = 9,926.19

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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.