Home / 31,885.57-47,804.55-21,996.64

Finding the Fourth Proportional to 31,885.57, 47,804.55 and 21,996.64

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Solution

The fourth proportional to 31,885.57, 47,804.55 and 21,996.64 is: 32,978.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,885.57 : 47,804.55 = 21,996.64 : x
  2. Step 2: Convert to fraction form
    31,885.57/47,804.55 = 21,996.64/x
  3. Step 3: Cross multiply
    31,885.57x = 47,804.55 × 21,996.64
  4. Step 4: Simplify right side
    31,885.57x = 1,051,539,476.71
  5. Step 5: Solve for x
    x = 1,051,539,476.71/31,885.57
  6. Step 6: Final answer
    x = 32,978.54

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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.