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Finding the Fourth Proportional to 14,720.40, 22,051.80 and 8,859.60

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Solution

The fourth proportional to 14,720.40, 22,051.80 and 8,859.60 is: 13,272.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,720.40 : 22,051.80 = 8,859.60 : x
  2. Step 2: Convert to fraction form
    14,720.40/22,051.80 = 8,859.60/x
  3. Step 3: Cross multiply
    14,720.40x = 22,051.80 × 8,859.60
  4. Step 4: Simplify right side
    14,720.40x = 195,370,127.28
  5. Step 5: Solve for x
    x = 195,370,127.28/14,720.40
  6. Step 6: Final answer
    x = 13,272.07

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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.