Home / 28,107,002.40-42,160,503.60-12,990,458.40

Finding the Fourth Proportional to 28,107,002.40, 42,160,503.60 and 12,990,458.40

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Solution

The fourth proportional to 28,107,002.40, 42,160,503.60 and 12,990,458.40 is: 19,485,687.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,107,002.40 : 42,160,503.60 = 12,990,458.40 : x
  2. Step 2: Convert to fraction form
    28,107,002.40/42,160,503.60 = 12,990,458.40/x
  3. Step 3: Cross multiply
    28,107,002.40x = 42,160,503.60 × 12,990,458.40
  4. Step 4: Simplify right side
    28,107,002.40x = 547,684,268,138,850.25
  5. Step 5: Solve for x
    x = 547,684,268,138,850.25/28,107,002.40
  6. Step 6: Final answer
    x = 19,485,687.60

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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.