Home / 21,019,020.20-31,528,530.30-18,893,256.20

Finding the Fourth Proportional to 21,019,020.20, 31,528,530.30 and 18,893,256.20

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Solution

The fourth proportional to 21,019,020.20, 31,528,530.30 and 18,893,256.20 is: 28,339,884.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,019,020.20 : 31,528,530.30 = 18,893,256.20 : x
  2. Step 2: Convert to fraction form
    21,019,020.20/31,528,530.30 = 18,893,256.20/x
  3. Step 3: Cross multiply
    21,019,020.20x = 31,528,530.30 × 18,893,256.20
  4. Step 4: Simplify right side
    21,019,020.20x = 595,676,600,567,362.88
  5. Step 5: Solve for x
    x = 595,676,600,567,362.88/21,019,020.20
  6. Step 6: Final answer
    x = 28,339,884.30

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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.