Home / 15,498.21-21,386.82-8,783.44

Finding the Fourth Proportional to 15,498.21, 21,386.82 and 8,783.44

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Solution

The fourth proportional to 15,498.21, 21,386.82 and 8,783.44 is: 12,120.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,498.21 : 21,386.82 = 8,783.44 : x
  2. Step 2: Convert to fraction form
    15,498.21/21,386.82 = 8,783.44/x
  3. Step 3: Cross multiply
    15,498.21x = 21,386.82 × 8,783.44
  4. Step 4: Simplify right side
    15,498.21x = 187,849,850.26
  5. Step 5: Solve for x
    x = 187,849,850.26/15,498.21
  6. Step 6: Final answer
    x = 12,120.74

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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.