Home / 15,159,130.65-20,920,019.78-9,278,647.83

Finding the Fourth Proportional to 15,159,130.65, 20,920,019.78 and 9,278,647.83

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Solution

The fourth proportional to 15,159,130.65, 20,920,019.78 and 9,278,647.83 is: 12,804,790.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,159,130.65 : 20,920,019.78 = 9,278,647.83 : x
  2. Step 2: Convert to fraction form
    15,159,130.65/20,920,019.78 = 9,278,647.83/x
  3. Step 3: Cross multiply
    15,159,130.65x = 20,920,019.78 × 9,278,647.83
  4. Step 4: Simplify right side
    15,159,130.65x = 194,109,496,135,254.09
  5. Step 5: Solve for x
    x = 194,109,496,135,254.09/15,159,130.65
  6. Step 6: Final answer
    x = 12,804,790.76

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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.