Home / 14,080.68-19,431.62-8,421.26

Finding the Fourth Proportional to 14,080.68, 19,431.62 and 8,421.26

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Solution

The fourth proportional to 14,080.68, 19,431.62 and 8,421.26 is: 11,621.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,080.68 : 19,431.62 = 8,421.26 : x
  2. Step 2: Convert to fraction form
    14,080.68/19,431.62 = 8,421.26/x
  3. Step 3: Cross multiply
    14,080.68x = 19,431.62 × 8,421.26
  4. Step 4: Simplify right side
    14,080.68x = 163,638,724.24
  5. Step 5: Solve for x
    x = 163,638,724.24/14,080.68
  6. Step 6: Final answer
    x = 11,621.51

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Double scale
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Similar ratio
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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.