Home / 21,070.90-31,610.96-7,923.27

Finding the Fourth Proportional to 21,070.90, 31,610.96 and 7,923.27

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Solution

The fourth proportional to 21,070.90, 31,610.96 and 7,923.27 is: 11,886.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,070.90 : 31,610.96 = 7,923.27 : x
  2. Step 2: Convert to fraction form
    21,070.90/31,610.96 = 7,923.27/x
  3. Step 3: Cross multiply
    21,070.90x = 31,610.96 × 7,923.27
  4. Step 4: Simplify right side
    21,070.90x = 250,462,072.20
  5. Step 5: Solve for x
    x = 250,462,072.20/21,070.90
  6. Step 6: Final answer
    x = 11,886.64

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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.