Home / 18,989,420.40-28,484,130.96-4,612,391.32

Finding the Fourth Proportional to 18,989,420.40, 28,484,130.96 and 4,612,391.32

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Solution

The fourth proportional to 18,989,420.40, 28,484,130.96 and 4,612,391.32 is: 6,918,587.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,989,420.40 : 28,484,130.96 = 4,612,391.32 : x
  2. Step 2: Convert to fraction form
    18,989,420.40/28,484,130.96 = 4,612,391.32/x
  3. Step 3: Cross multiply
    18,989,420.40x = 28,484,130.96 × 4,612,391.32
  4. Step 4: Simplify right side
    18,989,420.40x = 131,379,958,397,647.28
  5. Step 5: Solve for x
    x = 131,379,958,397,647.28/18,989,420.40
  6. Step 6: Final answer
    x = 6,918,587.07

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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.