Home / 15,512.72-21,408.30-8,798.63

Finding the Fourth Proportional to 15,512.72, 21,408.30 and 8,798.63

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Solution

The fourth proportional to 15,512.72, 21,408.30 and 8,798.63 is: 12,142.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,512.72 : 21,408.30 = 8,798.63 : x
  2. Step 2: Convert to fraction form
    15,512.72/21,408.30 = 8,798.63/x
  3. Step 3: Cross multiply
    15,512.72x = 21,408.30 × 8,798.63
  4. Step 4: Simplify right side
    15,512.72x = 188,363,603.59
  5. Step 5: Solve for x
    x = 188,363,603.59/15,512.72
  6. Step 6: Final answer
    x = 12,142.53

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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.