Home / 19,721.10-29,576.52-7,874.40

Finding the Fourth Proportional to 19,721.10, 29,576.52 and 7,874.40

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Solution

The fourth proportional to 19,721.10, 29,576.52 and 7,874.40 is: 11,809.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,721.10 : 29,576.52 = 7,874.40 : x
  2. Step 2: Convert to fraction form
    19,721.10/29,576.52 = 7,874.40/x
  3. Step 3: Cross multiply
    19,721.10x = 29,576.52 × 7,874.40
  4. Step 4: Simplify right side
    19,721.10x = 232,897,349.09
  5. Step 5: Solve for x
    x = 232,897,349.09/19,721.10
  6. Step 6: Final answer
    x = 11,809.55

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1.5x scale

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.