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Finding the Fourth Proportional to 13,328.98, 18,393.54 and 8,292.10

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Solution

The fourth proportional to 13,328.98, 18,393.54 and 8,292.10 is: 11,442.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,328.98 : 18,393.54 = 8,292.10 : x
  2. Step 2: Convert to fraction form
    13,328.98/18,393.54 = 8,292.10/x
  3. Step 3: Cross multiply
    13,328.98x = 18,393.54 × 8,292.10
  4. Step 4: Simplify right side
    13,328.98x = 152,521,073.03
  5. Step 5: Solve for x
    x = 152,521,073.03/13,328.98
  6. Step 6: Final answer
    x = 11,442.82

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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.