Home / 15,744.66-21,712.63-12,153.88

Finding the Fourth Proportional to 15,744.66, 21,712.63 and 12,153.88

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Solution

The fourth proportional to 15,744.66, 21,712.63 and 12,153.88 is: 16,760.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,744.66 : 21,712.63 = 12,153.88 : x
  2. Step 2: Convert to fraction form
    15,744.66/21,712.63 = 12,153.88/x
  3. Step 3: Cross multiply
    15,744.66x = 21,712.63 × 12,153.88
  4. Step 4: Simplify right side
    15,744.66x = 263,892,699.50
  5. Step 5: Solve for x
    x = 263,892,699.50/15,744.66
  6. Step 6: Final answer
    x = 16,760.77

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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.