Home / 21,963.51-30,308.45-13,011.84

Finding the Fourth Proportional to 21,963.51, 30,308.45 and 13,011.84

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Solution

The fourth proportional to 21,963.51, 30,308.45 and 13,011.84 is: 17,955.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,963.51 : 30,308.45 = 13,011.84 : x
  2. Step 2: Convert to fraction form
    21,963.51/30,308.45 = 13,011.84/x
  3. Step 3: Cross multiply
    21,963.51x = 30,308.45 × 13,011.84
  4. Step 4: Simplify right side
    21,963.51x = 394,368,636.99
  5. Step 5: Solve for x
    x = 394,368,636.99/21,963.51
  6. Step 6: Final answer
    x = 17,955.63

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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.