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Finding the Fourth Proportional to 21,384.63, 32,082.41 and 8,900.51

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Solution

The fourth proportional to 21,384.63, 32,082.41 and 8,900.51 is: 13,353.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,384.63 : 32,082.41 = 8,900.51 : x
  2. Step 2: Convert to fraction form
    21,384.63/32,082.41 = 8,900.51/x
  3. Step 3: Cross multiply
    21,384.63x = 32,082.41 × 8,900.51
  4. Step 4: Simplify right side
    21,384.63x = 285,549,672.87
  5. Step 5: Solve for x
    x = 285,549,672.87/21,384.63
  6. Step 6: Final answer
    x = 13,353.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.