Home / 15,311,392.94-21,129,710.74-8,435,874.98

Finding the Fourth Proportional to 15,311,392.94, 21,129,710.74 and 8,435,874.98

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Solution

The fourth proportional to 15,311,392.94, 21,129,710.74 and 8,435,874.98 is: 11,641,501.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,311,392.94 : 21,129,710.74 = 8,435,874.98 : x
  2. Step 2: Convert to fraction form
    15,311,392.94/21,129,710.74 = 8,435,874.98/x
  3. Step 3: Cross multiply
    15,311,392.94x = 21,129,710.74 × 8,435,874.98
  4. Step 4: Simplify right side
    15,311,392.94x = 178,247,598,039,465.03
  5. Step 5: Solve for x
    x = 178,247,598,039,465.03/15,311,392.94
  6. Step 6: Final answer
    x = 11,641,501.12

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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.