Home / 21,271.60-31,904.70-5,690.44

Finding the Fourth Proportional to 21,271.60, 31,904.70 and 5,690.44

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Solution

The fourth proportional to 21,271.60, 31,904.70 and 5,690.44 is: 8,534.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,271.60 : 31,904.70 = 5,690.44 : x
  2. Step 2: Convert to fraction form
    21,271.60/31,904.70 = 5,690.44/x
  3. Step 3: Cross multiply
    21,271.60x = 31,904.70 × 5,690.44
  4. Step 4: Simplify right side
    21,271.60x = 181,551,781.07
  5. Step 5: Solve for x
    x = 181,551,781.07/21,271.60
  6. Step 6: Final answer
    x = 8,534.94

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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.