Home / 13,220.34-19,840.11-10,654.26

Finding the Fourth Proportional to 13,220.34, 19,840.11 and 10,654.26

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Solution

The fourth proportional to 13,220.34, 19,840.11 and 10,654.26 is: 15,989.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,220.34 : 19,840.11 = 10,654.26 : x
  2. Step 2: Convert to fraction form
    13,220.34/19,840.11 = 10,654.26/x
  3. Step 3: Cross multiply
    13,220.34x = 19,840.11 × 10,654.26
  4. Step 4: Simplify right side
    13,220.34x = 211,381,690.37
  5. Step 5: Solve for x
    x = 211,381,690.37/13,220.34
  6. Step 6: Final answer
    x = 15,989.13

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1.5x scale

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.