Home / 15,348.72-21,181.32-9,064.20

Finding the Fourth Proportional to 15,348.72, 21,181.32 and 9,064.20

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Solution

The fourth proportional to 15,348.72, 21,181.32 and 9,064.20 is: 12,508.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,348.72 : 21,181.32 = 9,064.20 : x
  2. Step 2: Convert to fraction form
    15,348.72/21,181.32 = 9,064.20/x
  3. Step 3: Cross multiply
    15,348.72x = 21,181.32 × 9,064.20
  4. Step 4: Simplify right side
    15,348.72x = 191,991,720.74
  5. Step 5: Solve for x
    x = 191,991,720.74/15,348.72
  6. Step 6: Final answer
    x = 12,508.65

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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.