Home / 21,127.50-31,702.19-10,739.25

Finding the Fourth Proportional to 21,127.50, 31,702.19 and 10,739.25

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Solution

The fourth proportional to 21,127.50, 31,702.19 and 10,739.25 is: 16,114.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,127.50 : 31,702.19 = 10,739.25 : x
  2. Step 2: Convert to fraction form
    21,127.50/31,702.19 = 10,739.25/x
  3. Step 3: Cross multiply
    21,127.50x = 31,702.19 × 10,739.25
  4. Step 4: Simplify right side
    21,127.50x = 340,457,690.26
  5. Step 5: Solve for x
    x = 340,457,690.26/21,127.50
  6. Step 6: Final answer
    x = 16,114.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.