Home / 21,349.85-29,476.64-19,107.83

Finding the Fourth Proportional to 21,349.85, 29,476.64 and 19,107.83

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Solution

The fourth proportional to 21,349.85, 29,476.64 and 19,107.83 is: 26,381.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,349.85 : 29,476.64 = 19,107.83 : x
  2. Step 2: Convert to fraction form
    21,349.85/29,476.64 = 19,107.83/x
  3. Step 3: Cross multiply
    21,349.85x = 29,476.64 × 19,107.83
  4. Step 4: Simplify right side
    21,349.85x = 563,234,747.55
  5. Step 5: Solve for x
    x = 563,234,747.55/21,349.85
  6. Step 6: Final answer
    x = 26,381.21

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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.