Home / 20,736,085.40-31,104,128.10-18,645,896.60

Finding the Fourth Proportional to 20,736,085.40, 31,104,128.10 and 18,645,896.60

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Solution

The fourth proportional to 20,736,085.40, 31,104,128.10 and 18,645,896.60 is: 27,968,844.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,736,085.40 : 31,104,128.10 = 18,645,896.60 : x
  2. Step 2: Convert to fraction form
    20,736,085.40/31,104,128.10 = 18,645,896.60/x
  3. Step 3: Cross multiply
    20,736,085.40x = 31,104,128.10 × 18,645,896.60
  4. Step 4: Simplify right side
    20,736,085.40x = 579,964,356,385,754.50
  5. Step 5: Solve for x
    x = 579,964,356,385,754.50/20,736,085.40
  6. Step 6: Final answer
    x = 27,968,844.90

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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.