Home / 19,126.48-28,688.10-6,643.30

Finding the Fourth Proportional to 19,126.48, 28,688.10 and 6,643.30

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Solution

The fourth proportional to 19,126.48, 28,688.10 and 6,643.30 is: 9,964.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,126.48 : 28,688.10 = 6,643.30 : x
  2. Step 2: Convert to fraction form
    19,126.48/28,688.10 = 6,643.30/x
  3. Step 3: Cross multiply
    19,126.48x = 28,688.10 × 6,643.30
  4. Step 4: Simplify right side
    19,126.48x = 190,583,654.73
  5. Step 5: Solve for x
    x = 190,583,654.73/19,126.48
  6. Step 6: Final answer
    x = 9,964.39

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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.