Home / 31,887.57-47,807.55-21,998.64

Finding the Fourth Proportional to 31,887.57, 47,807.55 and 21,998.64

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Solution

The fourth proportional to 31,887.57, 47,807.55 and 21,998.64 is: 32,981.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,887.57 : 47,807.55 = 21,998.64 : x
  2. Step 2: Convert to fraction form
    31,887.57/47,807.55 = 21,998.64/x
  3. Step 3: Cross multiply
    31,887.57x = 47,807.55 × 21,998.64
  4. Step 4: Simplify right side
    31,887.57x = 1,051,701,081.73
  5. Step 5: Solve for x
    x = 1,051,701,081.73/31,887.57
  6. Step 6: Final answer
    x = 32,981.54

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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.