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Finding the Fourth Proportional to 21,034.76, 29,027.16 and 11,603.32

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Solution

The fourth proportional to 21,034.76, 29,027.16 and 11,603.32 is: 16,012.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,034.76 : 29,027.16 = 11,603.32 : x
  2. Step 2: Convert to fraction form
    21,034.76/29,027.16 = 11,603.32/x
  3. Step 3: Cross multiply
    21,034.76x = 29,027.16 × 11,603.32
  4. Step 4: Simplify right side
    21,034.76x = 336,811,353.60
  5. Step 5: Solve for x
    x = 336,811,353.60/21,034.76
  6. Step 6: Final answer
    x = 16,012.14

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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.