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Finding the Fourth Proportional to 21,883.61, 30,163.08 and 15,502.01

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Solution

The fourth proportional to 21,883.61, 30,163.08 and 15,502.01 is: 21,367.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,883.61 : 30,163.08 = 15,502.01 : x
  2. Step 2: Convert to fraction form
    21,883.61/30,163.08 = 15,502.01/x
  3. Step 3: Cross multiply
    21,883.61x = 30,163.08 × 15,502.01
  4. Step 4: Simplify right side
    21,883.61x = 467,588,443.20
  5. Step 5: Solve for x
    x = 467,588,443.20/21,883.61
  6. Step 6: Final answer
    x = 21,367.06

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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.