Home / 15,305,029.16-21,120,940.22-8,429,511.24

Finding the Fourth Proportional to 15,305,029.16, 21,120,940.22 and 8,429,511.24

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Solution

The fourth proportional to 15,305,029.16, 21,120,940.22 and 8,429,511.24 is: 11,632,725.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,305,029.16 : 21,120,940.22 = 8,429,511.24 : x
  2. Step 2: Convert to fraction form
    15,305,029.16/21,120,940.22 = 8,429,511.24/x
  3. Step 3: Cross multiply
    15,305,029.16x = 21,120,940.22 × 8,429,511.24
  4. Step 4: Simplify right side
    15,305,029.16x = 178,039,202,941,710.53
  5. Step 5: Solve for x
    x = 178,039,202,941,710.53/15,305,029.16
  6. Step 6: Final answer
    x = 11,632,725.50

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1.5x scale

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.