Home / 28,191.83-38,905.74-15,616.58

Finding the Fourth Proportional to 28,191.83, 38,905.74 and 15,616.58

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Solution

The fourth proportional to 28,191.83, 38,905.74 and 15,616.58 is: 21,551.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,191.83 : 38,905.74 = 15,616.58 : x
  2. Step 2: Convert to fraction form
    28,191.83/38,905.74 = 15,616.58/x
  3. Step 3: Cross multiply
    28,191.83x = 38,905.74 × 15,616.58
  4. Step 4: Simplify right side
    28,191.83x = 607,574,406.64
  5. Step 5: Solve for x
    x = 607,574,406.64/28,191.83
  6. Step 6: Final answer
    x = 21,551.44

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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.