Home / 18,731,890.80-28,090,837.80-13,035,193.20

Finding the Fourth Proportional to 18,731,890.80, 28,090,837.80 and 13,035,193.20

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Solution

The fourth proportional to 18,731,890.80, 28,090,837.80 and 13,035,193.20 is: 19,547,919.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,731,890.80 : 28,090,837.80 = 13,035,193.20 : x
  2. Step 2: Convert to fraction form
    18,731,890.80/28,090,837.80 = 13,035,193.20/x
  3. Step 3: Cross multiply
    18,731,890.80x = 28,090,837.80 × 13,035,193.20
  4. Step 4: Simplify right side
    18,731,890.80x = 366,169,497,872,862.94
  5. Step 5: Solve for x
    x = 366,169,497,872,862.94/18,731,890.80
  6. Step 6: Final answer
    x = 19,547,919.74

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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.