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Finding the Fourth Proportional to 9,420.73, 13,001.64 and 6,020.87

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Solution

The fourth proportional to 9,420.73, 13,001.64 and 6,020.87 is: 8,309.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,420.73 : 13,001.64 = 6,020.87 : x
  2. Step 2: Convert to fraction form
    9,420.73/13,001.64 = 6,020.87/x
  3. Step 3: Cross multiply
    9,420.73x = 13,001.64 × 6,020.87
  4. Step 4: Simplify right side
    9,420.73x = 78,281,184.23
  5. Step 5: Solve for x
    x = 78,281,184.23/9,420.73
  6. Step 6: Final answer
    x = 8,309.46

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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.