Home / 20,533.65-28,336.07-11,581.17

Finding the Fourth Proportional to 20,533.65, 28,336.07 and 11,581.17

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Solution

The fourth proportional to 20,533.65, 28,336.07 and 11,581.17 is: 15,981.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,533.65 : 28,336.07 = 11,581.17 : x
  2. Step 2: Convert to fraction form
    20,533.65/28,336.07 = 11,581.17/x
  3. Step 3: Cross multiply
    20,533.65x = 28,336.07 × 11,581.17
  4. Step 4: Simplify right side
    20,533.65x = 328,164,785.90
  5. Step 5: Solve for x
    x = 328,164,785.90/20,533.65
  6. Step 6: Final answer
    x = 15,981.80

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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.