Home / 21,215.14-29,277.93-11,783.50

Finding the Fourth Proportional to 21,215.14, 29,277.93 and 11,783.50

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Solution

The fourth proportional to 21,215.14, 29,277.93 and 11,783.50 is: 16,261.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,215.14 : 29,277.93 = 11,783.50 : x
  2. Step 2: Convert to fraction form
    21,215.14/29,277.93 = 11,783.50/x
  3. Step 3: Cross multiply
    21,215.14x = 29,277.93 × 11,783.50
  4. Step 4: Simplify right side
    21,215.14x = 344,996,488.16
  5. Step 5: Solve for x
    x = 344,996,488.16/21,215.14
  6. Step 6: Final answer
    x = 16,261.81

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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.