Home / 13,943.76-19,124.40-12,369.12

Finding the Fourth Proportional to 13,943.76, 19,124.40 and 12,369.12

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Solution

The fourth proportional to 13,943.76, 19,124.40 and 12,369.12 is: 16,964.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,943.76 : 19,124.40 = 12,369.12 : x
  2. Step 2: Convert to fraction form
    13,943.76/19,124.40 = 12,369.12/x
  3. Step 3: Cross multiply
    13,943.76x = 19,124.40 × 12,369.12
  4. Step 4: Simplify right side
    13,943.76x = 236,551,998.53
  5. Step 5: Solve for x
    x = 236,551,998.53/13,943.76
  6. Step 6: Final answer
    x = 16,964.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.