Home / 31,156.20-42,990.48-19,224.36

Finding the Fourth Proportional to 31,156.20, 42,990.48 and 19,224.36

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Solution

The fourth proportional to 31,156.20, 42,990.48 and 19,224.36 is: 26,526.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,156.20 : 42,990.48 = 19,224.36 : x
  2. Step 2: Convert to fraction form
    31,156.20/42,990.48 = 19,224.36/x
  3. Step 3: Cross multiply
    31,156.20x = 42,990.48 × 19,224.36
  4. Step 4: Simplify right side
    31,156.20x = 826,464,464.09
  5. Step 5: Solve for x
    x = 826,464,464.09/31,156.20
  6. Step 6: Final answer
    x = 26,526.48

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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.