Home / 21,881.04-30,178.76-19,365.84

Finding the Fourth Proportional to 21,881.04, 30,178.76 and 19,365.84

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Solution

The fourth proportional to 21,881.04, 30,178.76 and 19,365.84 is: 26,709.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,881.04 : 30,178.76 = 19,365.84 : x
  2. Step 2: Convert to fraction form
    21,881.04/30,178.76 = 19,365.84/x
  3. Step 3: Cross multiply
    21,881.04x = 30,178.76 × 19,365.84
  4. Step 4: Simplify right side
    21,881.04x = 584,437,037.56
  5. Step 5: Solve for x
    x = 584,437,037.56/21,881.04
  6. Step 6: Final answer
    x = 26,709.75

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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.