Home / 13,122.72-18,110.88-7,534.08

Finding the Fourth Proportional to 13,122.72, 18,110.88 and 7,534.08

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Solution

The fourth proportional to 13,122.72, 18,110.88 and 7,534.08 is: 10,397.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,122.72 : 18,110.88 = 7,534.08 : x
  2. Step 2: Convert to fraction form
    13,122.72/18,110.88 = 7,534.08/x
  3. Step 3: Cross multiply
    13,122.72x = 18,110.88 × 7,534.08
  4. Step 4: Simplify right side
    13,122.72x = 136,448,818.79
  5. Step 5: Solve for x
    x = 136,448,818.79/13,122.72
  6. Step 6: Final answer
    x = 10,397.91

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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.