Home / 31,726.85-43,803.23-19,807.70

Finding the Fourth Proportional to 31,726.85, 43,803.23 and 19,807.70

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Solution

The fourth proportional to 31,726.85, 43,803.23 and 19,807.70 is: 27,347.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,726.85 : 43,803.23 = 19,807.70 : x
  2. Step 2: Convert to fraction form
    31,726.85/43,803.23 = 19,807.70/x
  3. Step 3: Cross multiply
    31,726.85x = 43,803.23 × 19,807.70
  4. Step 4: Simplify right side
    31,726.85x = 867,640,920.82
  5. Step 5: Solve for x
    x = 867,640,920.82/31,726.85
  6. Step 6: Final answer
    x = 27,347.22

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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.