Home / 13,011.15-17,948.62-7,976.55

Finding the Fourth Proportional to 13,011.15, 17,948.62 and 7,976.55

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Solution

The fourth proportional to 13,011.15, 17,948.62 and 7,976.55 is: 11,003.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,011.15 : 17,948.62 = 7,976.55 : x
  2. Step 2: Convert to fraction form
    13,011.15/17,948.62 = 7,976.55/x
  3. Step 3: Cross multiply
    13,011.15x = 17,948.62 × 7,976.55
  4. Step 4: Simplify right side
    13,011.15x = 143,168,064.86
  5. Step 5: Solve for x
    x = 143,168,064.86/13,011.15
  6. Step 6: Final answer
    x = 11,003.49

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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.