Home / 15,512.77-21,407.99-8,798.85

Finding the Fourth Proportional to 15,512.77, 21,407.99 and 8,798.85

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Solution

The fourth proportional to 15,512.77, 21,407.99 and 8,798.85 is: 12,142.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,512.77 : 21,407.99 = 8,798.85 : x
  2. Step 2: Convert to fraction form
    15,512.77/21,407.99 = 8,798.85/x
  3. Step 3: Cross multiply
    15,512.77x = 21,407.99 × 8,798.85
  4. Step 4: Simplify right side
    15,512.77x = 188,365,714.81
  5. Step 5: Solve for x
    x = 188,365,714.81/15,512.77
  6. Step 6: Final answer
    x = 12,142.62

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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.