Home / 20,215.05-27,881.86-13,497.45

Finding the Fourth Proportional to 20,215.05, 27,881.86 and 13,497.45

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Solution

The fourth proportional to 20,215.05, 27,881.86 and 13,497.45 is: 18,616.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,215.05 : 27,881.86 = 13,497.45 : x
  2. Step 2: Convert to fraction form
    20,215.05/27,881.86 = 13,497.45/x
  3. Step 3: Cross multiply
    20,215.05x = 27,881.86 × 13,497.45
  4. Step 4: Simplify right side
    20,215.05x = 376,334,011.26
  5. Step 5: Solve for x
    x = 376,334,011.26/20,215.05
  6. Step 6: Final answer
    x = 18,616.53

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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.