Home / 15,047,869.12-20,766,181.40-8,172,400.40

Finding the Fourth Proportional to 15,047,869.12, 20,766,181.40 and 8,172,400.40

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Solution

The fourth proportional to 15,047,869.12, 20,766,181.40 and 8,172,400.40 is: 11,277,978.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,047,869.12 : 20,766,181.40 = 8,172,400.40 : x
  2. Step 2: Convert to fraction form
    15,047,869.12/20,766,181.40 = 8,172,400.40/x
  3. Step 3: Cross multiply
    15,047,869.12x = 20,766,181.40 × 8,172,400.40
  4. Step 4: Simplify right side
    15,047,869.12x = 169,709,549,179,832.56
  5. Step 5: Solve for x
    x = 169,709,549,179,832.56/15,047,869.12
  6. Step 6: Final answer
    x = 11,277,978.82

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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.