Home / 21,783.20-32,631.04-18,437.10

Finding the Fourth Proportional to 21,783.20, 32,631.04 and 18,437.10

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Solution

The fourth proportional to 21,783.20, 32,631.04 and 18,437.10 is: 27,618.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,783.20 : 32,631.04 = 18,437.10 : x
  2. Step 2: Convert to fraction form
    21,783.20/32,631.04 = 18,437.10/x
  3. Step 3: Cross multiply
    21,783.20x = 32,631.04 × 18,437.10
  4. Step 4: Simplify right side
    21,783.20x = 601,621,747.58
  5. Step 5: Solve for x
    x = 601,621,747.58/21,783.20
  6. Step 6: Final answer
    x = 27,618.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.