Home / 31,687.03-43,728.74-18,953.34

Finding the Fourth Proportional to 31,687.03, 43,728.74 and 18,953.34

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Solution

The fourth proportional to 31,687.03, 43,728.74 and 18,953.34 is: 26,155.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,687.03 : 43,728.74 = 18,953.34 : x
  2. Step 2: Convert to fraction form
    31,687.03/43,728.74 = 18,953.34/x
  3. Step 3: Cross multiply
    31,687.03x = 43,728.74 × 18,953.34
  4. Step 4: Simplify right side
    31,687.03x = 828,805,676.99
  5. Step 5: Solve for x
    x = 828,805,676.99/31,687.03
  6. Step 6: Final answer
    x = 26,155.99

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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.