Home / 31,039.89-42,835.89-19,110.02

Finding the Fourth Proportional to 31,039.89, 42,835.89 and 19,110.02

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Solution

The fourth proportional to 31,039.89, 42,835.89 and 19,110.02 is: 26,372.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,039.89 : 42,835.89 = 19,110.02 : x
  2. Step 2: Convert to fraction form
    31,039.89/42,835.89 = 19,110.02/x
  3. Step 3: Cross multiply
    31,039.89x = 42,835.89 × 19,110.02
  4. Step 4: Simplify right side
    31,039.89x = 818,594,500.44
  5. Step 5: Solve for x
    x = 818,594,500.44/31,039.89
  6. Step 6: Final answer
    x = 26,372.34

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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.