Home / 12,288.90-18,436.10-6,739.40

Finding the Fourth Proportional to 12,288.90, 18,436.10 and 6,739.40

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Solution

The fourth proportional to 12,288.90, 18,436.10 and 6,739.40 is: 10,110.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,288.90 : 18,436.10 = 6,739.40 : x
  2. Step 2: Convert to fraction form
    12,288.90/18,436.10 = 6,739.40/x
  3. Step 3: Cross multiply
    12,288.90x = 18,436.10 × 6,739.40
  4. Step 4: Simplify right side
    12,288.90x = 124,248,126.46
  5. Step 5: Solve for x
    x = 124,248,126.46/12,288.90
  6. Step 6: Final answer
    x = 10,110.60

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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.