Home / 19,874.42-27,420.71-11,913.74

Finding the Fourth Proportional to 19,874.42, 27,420.71 and 11,913.74

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Solution

The fourth proportional to 19,874.42, 27,420.71 and 11,913.74 is: 16,437.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,874.42 : 27,420.71 = 11,913.74 : x
  2. Step 2: Convert to fraction form
    19,874.42/27,420.71 = 11,913.74/x
  3. Step 3: Cross multiply
    19,874.42x = 27,420.71 × 11,913.74
  4. Step 4: Simplify right side
    19,874.42x = 326,683,012.88
  5. Step 5: Solve for x
    x = 326,683,012.88/19,874.42
  6. Step 6: Final answer
    x = 16,437.36

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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.