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Finding the Fourth Proportional to 14,355.69, 19,810.88 and 7,982.22

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Solution

The fourth proportional to 14,355.69, 19,810.88 and 7,982.22 is: 11,015.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,355.69 : 19,810.88 = 7,982.22 : x
  2. Step 2: Convert to fraction form
    14,355.69/19,810.88 = 7,982.22/x
  3. Step 3: Cross multiply
    14,355.69x = 19,810.88 × 7,982.22
  4. Step 4: Simplify right side
    14,355.69x = 158,134,688.35
  5. Step 5: Solve for x
    x = 158,134,688.35/14,355.69
  6. Step 6: Final answer
    x = 11,015.47

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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.