Home / 21,157.60-31,737.74-7,116.52

Finding the Fourth Proportional to 21,157.60, 31,737.74 and 7,116.52

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Solution

The fourth proportional to 21,157.60, 31,737.74 and 7,116.52 is: 10,675.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,157.60 : 31,737.74 = 7,116.52 : x
  2. Step 2: Convert to fraction form
    21,157.60/31,737.74 = 7,116.52/x
  3. Step 3: Cross multiply
    21,157.60x = 31,737.74 × 7,116.52
  4. Step 4: Simplify right side
    21,157.60x = 225,862,261.46
  5. Step 5: Solve for x
    x = 225,862,261.46/21,157.60
  6. Step 6: Final answer
    x = 10,675.23

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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.