Home / 28,964.28-39,990.06-19,529.40

Finding the Fourth Proportional to 28,964.28, 39,990.06 and 19,529.40

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Solution

The fourth proportional to 28,964.28, 39,990.06 and 19,529.40 is: 26,963.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,964.28 : 39,990.06 = 19,529.40 : x
  2. Step 2: Convert to fraction form
    28,964.28/39,990.06 = 19,529.40/x
  3. Step 3: Cross multiply
    28,964.28x = 39,990.06 × 19,529.40
  4. Step 4: Simplify right side
    28,964.28x = 780,981,877.76
  5. Step 5: Solve for x
    x = 780,981,877.76/28,964.28
  6. Step 6: Final answer
    x = 26,963.62

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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.