Home / 28,071,240.40-42,106,860.60-15,978,005.20

Finding the Fourth Proportional to 28,071,240.40, 42,106,860.60 and 15,978,005.20

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Solution

The fourth proportional to 28,071,240.40, 42,106,860.60 and 15,978,005.20 is: 23,967,007.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,071,240.40 : 42,106,860.60 = 15,978,005.20 : x
  2. Step 2: Convert to fraction form
    28,071,240.40/42,106,860.60 = 15,978,005.20/x
  3. Step 3: Cross multiply
    28,071,240.40x = 42,106,860.60 × 15,978,005.20
  4. Step 4: Simplify right side
    28,071,240.40x = 672,783,637,622,475.12
  5. Step 5: Solve for x
    x = 672,783,637,622,475.12/28,071,240.40
  6. Step 6: Final answer
    x = 23,967,007.80

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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.