Home / 22,810.79-31,500.55-21,568.30

Finding the Fourth Proportional to 22,810.79, 31,500.55 and 21,568.30

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Solution

The fourth proportional to 22,810.79, 31,500.55 and 21,568.30 is: 29,784.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,810.79 : 31,500.55 = 21,568.30 : x
  2. Step 2: Convert to fraction form
    22,810.79/31,500.55 = 21,568.30/x
  3. Step 3: Cross multiply
    22,810.79x = 31,500.55 × 21,568.30
  4. Step 4: Simplify right side
    22,810.79x = 679,413,228.05
  5. Step 5: Solve for x
    x = 679,413,228.05/22,810.79
  6. Step 6: Final answer
    x = 29,784.73

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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.