Home / 11,397.51-15,729.93-6,921.45

Finding the Fourth Proportional to 11,397.51, 15,729.93 and 6,921.45

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Solution

The fourth proportional to 11,397.51, 15,729.93 and 6,921.45 is: 9,552.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,397.51 : 15,729.93 = 6,921.45 : x
  2. Step 2: Convert to fraction form
    11,397.51/15,729.93 = 6,921.45/x
  3. Step 3: Cross multiply
    11,397.51x = 15,729.93 × 6,921.45
  4. Step 4: Simplify right side
    11,397.51x = 108,873,924.00
  5. Step 5: Solve for x
    x = 108,873,924.00/11,397.51
  6. Step 6: Final answer
    x = 9,552.43

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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.