Home / 28,405,021.40-42,607,532.10-19,713,008.60

Finding the Fourth Proportional to 28,405,021.40, 42,607,532.10 and 19,713,008.60

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Solution

The fourth proportional to 28,405,021.40, 42,607,532.10 and 19,713,008.60 is: 29,569,512.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,405,021.40 : 42,607,532.10 = 19,713,008.60 : x
  2. Step 2: Convert to fraction form
    28,405,021.40/42,607,532.10 = 19,713,008.60/x
  3. Step 3: Cross multiply
    28,405,021.40x = 42,607,532.10 × 19,713,008.60
  4. Step 4: Simplify right side
    28,405,021.40x = 839,922,646,712,076.12
  5. Step 5: Solve for x
    x = 839,922,646,712,076.12/28,405,021.40
  6. Step 6: Final answer
    x = 29,569,512.90

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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.