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Finding the Fourth Proportional to 20,597.51, 28,424.41 and 11,645

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Solution

The fourth proportional to 20,597.51, 28,424.41 and 11,645 is: 16,070.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,597.51 : 28,424.41 = 11,645 : x
  2. Step 2: Convert to fraction form
    20,597.51/28,424.41 = 11,645/x
  3. Step 3: Cross multiply
    20,597.51x = 28,424.41 × 11,645
  4. Step 4: Simplify right side
    20,597.51x = 331,002,254.45
  5. Step 5: Solve for x
    x = 331,002,254.45/20,597.51
  6. Step 6: Final answer
    x = 16,070.01

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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.