Home / 20,664.06-28,516.47-11,232.63

Finding the Fourth Proportional to 20,664.06, 28,516.47 and 11,232.63

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Solution

The fourth proportional to 20,664.06, 28,516.47 and 11,232.63 is: 15,501.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,664.06 : 28,516.47 = 11,232.63 : x
  2. Step 2: Convert to fraction form
    20,664.06/28,516.47 = 11,232.63/x
  3. Step 3: Cross multiply
    20,664.06x = 28,516.47 × 11,232.63
  4. Step 4: Simplify right side
    20,664.06x = 320,314,956.42
  5. Step 5: Solve for x
    x = 320,314,956.42/20,664.06
  6. Step 6: Final answer
    x = 15,501.07

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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.