Home / 28,006,143.76-38,647,943.40-15,782,755.60

Finding the Fourth Proportional to 28,006,143.76, 38,647,943.40 and 15,782,755.60

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Solution

The fourth proportional to 28,006,143.76, 38,647,943.40 and 15,782,755.60 is: 21,779,901.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,006,143.76 : 38,647,943.40 = 15,782,755.60 : x
  2. Step 2: Convert to fraction form
    28,006,143.76/38,647,943.40 = 15,782,755.60/x
  3. Step 3: Cross multiply
    28,006,143.76x = 38,647,943.40 × 15,782,755.60
  4. Step 4: Simplify right side
    28,006,143.76x = 609,971,045,124,833
  5. Step 5: Solve for x
    x = 609,971,045,124,833/28,006,143.76
  6. Step 6: Final answer
    x = 21,779,901.24

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.