Home / 28,382,006.40-42,573,009.60-12,456,758.40

Finding the Fourth Proportional to 28,382,006.40, 42,573,009.60 and 12,456,758.40

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Solution

The fourth proportional to 28,382,006.40, 42,573,009.60 and 12,456,758.40 is: 18,685,137.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,382,006.40 : 42,573,009.60 = 12,456,758.40 : x
  2. Step 2: Convert to fraction form
    28,382,006.40/42,573,009.60 = 12,456,758.40/x
  3. Step 3: Cross multiply
    28,382,006.40x = 42,573,009.60 × 12,456,758.40
  4. Step 4: Simplify right side
    28,382,006.40x = 530,321,694,948,080.69
  5. Step 5: Solve for x
    x = 530,321,694,948,080.69/28,382,006.40
  6. Step 6: Final answer
    x = 18,685,137.60

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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.