Home / 21,072.99-31,614.18-7,925.47

Finding the Fourth Proportional to 21,072.99, 31,614.18 and 7,925.47

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Solution

The fourth proportional to 21,072.99, 31,614.18 and 7,925.47 is: 11,889.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,072.99 : 31,614.18 = 7,925.47 : x
  2. Step 2: Convert to fraction form
    21,072.99/31,614.18 = 7,925.47/x
  3. Step 3: Cross multiply
    21,072.99x = 31,614.18 × 7,925.47
  4. Step 4: Simplify right side
    21,072.99x = 250,557,235.16
  5. Step 5: Solve for x
    x = 250,557,235.16/21,072.99
  6. Step 6: Final answer
    x = 11,889.97

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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.