Home / 15,327.09-21,172.19-12,011.76

Finding the Fourth Proportional to 15,327.09, 21,172.19 and 12,011.76

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Solution

The fourth proportional to 15,327.09, 21,172.19 and 12,011.76 is: 16,592.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,327.09 : 21,172.19 = 12,011.76 : x
  2. Step 2: Convert to fraction form
    15,327.09/21,172.19 = 12,011.76/x
  3. Step 3: Cross multiply
    15,327.09x = 21,172.19 × 12,011.76
  4. Step 4: Simplify right side
    15,327.09x = 254,315,204.90
  5. Step 5: Solve for x
    x = 254,315,204.90/15,327.09
  6. Step 6: Final answer
    x = 16,592.53

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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.