Home / 15,498.21-21,387.66-8,424.63

Finding the Fourth Proportional to 15,498.21, 21,387.66 and 8,424.63

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Solution

The fourth proportional to 15,498.21, 21,387.66 and 8,424.63 is: 11,626.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,498.21 : 21,387.66 = 8,424.63 : x
  2. Step 2: Convert to fraction form
    15,498.21/21,387.66 = 8,424.63/x
  3. Step 3: Cross multiply
    15,498.21x = 21,387.66 × 8,424.63
  4. Step 4: Simplify right side
    15,498.21x = 180,183,122.07
  5. Step 5: Solve for x
    x = 180,183,122.07/15,498.21
  6. Step 6: Final answer
    x = 11,626.06

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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.