Home / 22,145.28-30,692.40-21,730.56

Finding the Fourth Proportional to 22,145.28, 30,692.40 and 21,730.56

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Solution

The fourth proportional to 22,145.28, 30,692.40 and 21,730.56 is: 30,117.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,145.28 : 30,692.40 = 21,730.56 : x
  2. Step 2: Convert to fraction form
    22,145.28/30,692.40 = 21,730.56/x
  3. Step 3: Cross multiply
    22,145.28x = 30,692.40 × 21,730.56
  4. Step 4: Simplify right side
    22,145.28x = 666,963,039.74
  5. Step 5: Solve for x
    x = 666,963,039.74/22,145.28
  6. Step 6: Final answer
    x = 30,117.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.