Home / 13,362.54-18,440.10-8,646.72

Finding the Fourth Proportional to 13,362.54, 18,440.10 and 8,646.72

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Solution

The fourth proportional to 13,362.54, 18,440.10 and 8,646.72 is: 11,932.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,362.54 : 18,440.10 = 8,646.72 : x
  2. Step 2: Convert to fraction form
    13,362.54/18,440.10 = 8,646.72/x
  3. Step 3: Cross multiply
    13,362.54x = 18,440.10 × 8,646.72
  4. Step 4: Simplify right side
    13,362.54x = 159,446,381.47
  5. Step 5: Solve for x
    x = 159,446,381.47/13,362.54
  6. Step 6: Final answer
    x = 11,932.34

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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.