Home / 31,237.04-43,116.36-21,808.64

Finding the Fourth Proportional to 31,237.04, 43,116.36 and 21,808.64

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Solution

The fourth proportional to 31,237.04, 43,116.36 and 21,808.64 is: 30,102.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,237.04 : 43,116.36 = 21,808.64 : x
  2. Step 2: Convert to fraction form
    31,237.04/43,116.36 = 21,808.64/x
  3. Step 3: Cross multiply
    31,237.04x = 43,116.36 × 21,808.64
  4. Step 4: Simplify right side
    31,237.04x = 940,309,173.35
  5. Step 5: Solve for x
    x = 940,309,173.35/31,237.04
  6. Step 6: Final answer
    x = 30,102.38

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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.