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Finding the Fourth Proportional to 14,570.40, 21,855.60 and 6,254.40

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Solution

The fourth proportional to 14,570.40, 21,855.60 and 6,254.40 is: 9,381.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,570.40 : 21,855.60 = 6,254.40 : x
  2. Step 2: Convert to fraction form
    14,570.40/21,855.60 = 6,254.40/x
  3. Step 3: Cross multiply
    14,570.40x = 21,855.60 × 6,254.40
  4. Step 4: Simplify right side
    14,570.40x = 136,693,664.64
  5. Step 5: Solve for x
    x = 136,693,664.64/14,570.40
  6. Step 6: Final answer
    x = 9,381.60

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