Home / 12,317.40-18,381.27-9,840.60

Finding the Fourth Proportional to 12,317.40, 18,381.27 and 9,840.60

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Solution

The fourth proportional to 12,317.40, 18,381.27 and 9,840.60 is: 14,685.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,317.40 : 18,381.27 = 9,840.60 : x
  2. Step 2: Convert to fraction form
    12,317.40/18,381.27 = 9,840.60/x
  3. Step 3: Cross multiply
    12,317.40x = 18,381.27 × 9,840.60
  4. Step 4: Simplify right side
    12,317.40x = 180,882,725.56
  5. Step 5: Solve for x
    x = 180,882,725.56/12,317.40
  6. Step 6: Final answer
    x = 14,685.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.