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Finding the Fourth Proportional to 21,607.64, 32,398.50 and 8,444.33

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Solution

The fourth proportional to 21,607.64, 32,398.50 and 8,444.33 is: 12,661.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,607.64 : 32,398.50 = 8,444.33 : x
  2. Step 2: Convert to fraction form
    21,607.64/32,398.50 = 8,444.33/x
  3. Step 3: Cross multiply
    21,607.64x = 32,398.50 × 8,444.33
  4. Step 4: Simplify right side
    21,607.64x = 273,583,625.51
  5. Step 5: Solve for x
    x = 273,583,625.51/21,607.64
  6. Step 6: Final answer
    x = 12,661.43

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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.