Home / 21,271.35-31,904.60-5,690.19

Finding the Fourth Proportional to 21,271.35, 31,904.60 and 5,690.19

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Solution

The fourth proportional to 21,271.35, 31,904.60 and 5,690.19 is: 8,534.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,271.35 : 31,904.60 = 5,690.19 : x
  2. Step 2: Convert to fraction form
    21,271.35/31,904.60 = 5,690.19/x
  3. Step 3: Cross multiply
    21,271.35x = 31,904.60 × 5,690.19
  4. Step 4: Simplify right side
    21,271.35x = 181,543,235.87
  5. Step 5: Solve for x
    x = 181,543,235.87/21,271.35
  6. Step 6: Final answer
    x = 8,534.64

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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.