Home / 21,389.76-32,080.96-5,808.64

Finding the Fourth Proportional to 21,389.76, 32,080.96 and 5,808.64

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Solution

The fourth proportional to 21,389.76, 32,080.96 and 5,808.64 is: 8,711.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,389.76 : 32,080.96 = 5,808.64 : x
  2. Step 2: Convert to fraction form
    21,389.76/32,080.96 = 5,808.64/x
  3. Step 3: Cross multiply
    21,389.76x = 32,080.96 × 5,808.64
  4. Step 4: Simplify right side
    21,389.76x = 186,346,747.49
  5. Step 5: Solve for x
    x = 186,346,747.49/21,389.76
  6. Step 6: Final answer
    x = 8,711.96

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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.