Home / 12,919,913.40-19,379,870.10-10,400,489.40

Finding the Fourth Proportional to 12,919,913.40, 19,379,870.10 and 10,400,489.40

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Solution

The fourth proportional to 12,919,913.40, 19,379,870.10 and 10,400,489.40 is: 15,600,734.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,919,913.40 : 19,379,870.10 = 10,400,489.40 : x
  2. Step 2: Convert to fraction form
    12,919,913.40/19,379,870.10 = 10,400,489.40/x
  3. Step 3: Cross multiply
    12,919,913.40x = 19,379,870.10 × 10,400,489.40
  4. Step 4: Simplify right side
    12,919,913.40x = 201,560,133,548,426.97
  5. Step 5: Solve for x
    x = 201,560,133,548,426.97/12,919,913.40
  6. Step 6: Final answer
    x = 15,600,734.10

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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.