Home / 19,925.16-29,890.71-12,422.62

Finding the Fourth Proportional to 19,925.16, 29,890.71 and 12,422.62

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Solution

The fourth proportional to 19,925.16, 29,890.71 and 12,422.62 is: 18,635.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,925.16 : 29,890.71 = 12,422.62 : x
  2. Step 2: Convert to fraction form
    19,925.16/29,890.71 = 12,422.62/x
  3. Step 3: Cross multiply
    19,925.16x = 29,890.71 × 12,422.62
  4. Step 4: Simplify right side
    19,925.16x = 371,320,783.62
  5. Step 5: Solve for x
    x = 371,320,783.62/19,925.16
  6. Step 6: Final answer
    x = 18,635.77

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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.