Home / 31,726.36-43,782.96-19,158.40

Finding the Fourth Proportional to 31,726.36, 43,782.96 and 19,158.40

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Solution

The fourth proportional to 31,726.36, 43,782.96 and 19,158.40 is: 26,438.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,726.36 : 43,782.96 = 19,158.40 : x
  2. Step 2: Convert to fraction form
    31,726.36/43,782.96 = 19,158.40/x
  3. Step 3: Cross multiply
    31,726.36x = 43,782.96 × 19,158.40
  4. Step 4: Simplify right side
    31,726.36x = 838,811,460.86
  5. Step 5: Solve for x
    x = 838,811,460.86/31,726.36
  6. Step 6: Final answer
    x = 26,438.94

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.