Home / 21,260.07-31,897.40-8,114.38

Finding the Fourth Proportional to 21,260.07, 31,897.40 and 8,114.38

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Solution

The fourth proportional to 21,260.07, 31,897.40 and 8,114.38 is: 12,174.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,260.07 : 31,897.40 = 8,114.38 : x
  2. Step 2: Convert to fraction form
    21,260.07/31,897.40 = 8,114.38/x
  3. Step 3: Cross multiply
    21,260.07x = 31,897.40 × 8,114.38
  4. Step 4: Simplify right side
    21,260.07x = 258,827,504.30
  5. Step 5: Solve for x
    x = 258,827,504.30/21,260.07
  6. Step 6: Final answer
    x = 12,174.35

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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.