Home / 28,384.70-39,169.83-15,809.18

Finding the Fourth Proportional to 28,384.70, 39,169.83 and 15,809.18

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Solution

The fourth proportional to 28,384.70, 39,169.83 and 15,809.18 is: 21,816.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,384.70 : 39,169.83 = 15,809.18 : x
  2. Step 2: Convert to fraction form
    28,384.70/39,169.83 = 15,809.18/x
  3. Step 3: Cross multiply
    28,384.70x = 39,169.83 × 15,809.18
  4. Step 4: Simplify right side
    28,384.70x = 619,242,893.04
  5. Step 5: Solve for x
    x = 619,242,893.04/28,384.70
  6. Step 6: Final answer
    x = 21,816.08

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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.