Home / 21,070.08-31,536-18,766.08

Finding the Fourth Proportional to 21,070.08, 31,536 and 18,766.08

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Solution

The fourth proportional to 21,070.08, 31,536 and 18,766.08 is: 28,087.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,070.08 : 31,536 = 18,766.08 : x
  2. Step 2: Convert to fraction form
    21,070.08/31,536 = 18,766.08/x
  3. Step 3: Cross multiply
    21,070.08x = 31,536 × 18,766.08
  4. Step 4: Simplify right side
    21,070.08x = 591,807,098.88
  5. Step 5: Solve for x
    x = 591,807,098.88/21,070.08
  6. Step 6: Final answer
    x = 28,087.56

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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.