Home / 18,887,905.61-28,328,689.02-5,242,438.25

Finding the Fourth Proportional to 18,887,905.61, 28,328,689.02 and 5,242,438.25

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Solution

The fourth proportional to 18,887,905.61, 28,328,689.02 and 5,242,438.25 is: 7,862,777.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,887,905.61 : 28,328,689.02 = 5,242,438.25 : x
  2. Step 2: Convert to fraction form
    18,887,905.61/28,328,689.02 = 5,242,438.25/x
  3. Step 3: Cross multiply
    18,887,905.61x = 28,328,689.02 × 5,242,438.25
  4. Step 4: Simplify right side
    18,887,905.61x = 148,511,402,749,159.56
  5. Step 5: Solve for x
    x = 148,511,402,749,159.56/18,887,905.61
  6. Step 6: Final answer
    x = 7,862,777.69

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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.