Home / 20,569.72-28,384.59-11,618.11

Finding the Fourth Proportional to 20,569.72, 28,384.59 and 11,618.11

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Solution

The fourth proportional to 20,569.72, 28,384.59 and 11,618.11 is: 16,032.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,569.72 : 28,384.59 = 11,618.11 : x
  2. Step 2: Convert to fraction form
    20,569.72/28,384.59 = 11,618.11/x
  3. Step 3: Cross multiply
    20,569.72x = 28,384.59 × 11,618.11
  4. Step 4: Simplify right side
    20,569.72x = 329,775,288.92
  5. Step 5: Solve for x
    x = 329,775,288.92/20,569.72
  6. Step 6: Final answer
    x = 16,032.07

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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.