Home / 31,699.40-47,546.34-19,215.75

Finding the Fourth Proportional to 31,699.40, 47,546.34 and 19,215.75

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Solution

The fourth proportional to 31,699.40, 47,546.34 and 19,215.75 is: 28,821.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,699.40 : 47,546.34 = 19,215.75 : x
  2. Step 2: Convert to fraction form
    31,699.40/47,546.34 = 19,215.75/x
  3. Step 3: Cross multiply
    31,699.40x = 47,546.34 × 19,215.75
  4. Step 4: Simplify right side
    31,699.40x = 913,638,582.86
  5. Step 5: Solve for x
    x = 913,638,582.86/31,699.40
  6. Step 6: Final answer
    x = 28,821.96

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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.