Home / 19,431,350.40-29,147,025.60-18,871,478.40

Finding the Fourth Proportional to 19,431,350.40, 29,147,025.60 and 18,871,478.40

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Solution

The fourth proportional to 19,431,350.40, 29,147,025.60 and 18,871,478.40 is: 28,307,217.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,431,350.40 : 29,147,025.60 = 18,871,478.40 : x
  2. Step 2: Convert to fraction form
    19,431,350.40/29,147,025.60 = 18,871,478.40/x
  3. Step 3: Cross multiply
    19,431,350.40x = 29,147,025.60 × 18,871,478.40
  4. Step 4: Simplify right side
    19,431,350.40x = 550,047,464,034,647
  5. Step 5: Solve for x
    x = 550,047,464,034,647/19,431,350.40
  6. Step 6: Final answer
    x = 28,307,217.60

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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.