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Finding the Fourth Proportional to 20,124.26, 27,770.20 and 12,570.14

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Solution

The fourth proportional to 20,124.26, 27,770.20 and 12,570.14 is: 17,345.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,124.26 : 27,770.20 = 12,570.14 : x
  2. Step 2: Convert to fraction form
    20,124.26/27,770.20 = 12,570.14/x
  3. Step 3: Cross multiply
    20,124.26x = 27,770.20 × 12,570.14
  4. Step 4: Simplify right side
    20,124.26x = 349,075,301.83
  5. Step 5: Solve for x
    x = 349,075,301.83/20,124.26
  6. Step 6: Final answer
    x = 17,345.99

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.