Home / 12,939,013.80-19,408,520.70-12,687,071.40

Finding the Fourth Proportional to 12,939,013.80, 19,408,520.70 and 12,687,071.40

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Solution

The fourth proportional to 12,939,013.80, 19,408,520.70 and 12,687,071.40 is: 19,030,607.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,939,013.80 : 19,408,520.70 = 12,687,071.40 : x
  2. Step 2: Convert to fraction form
    12,939,013.80/19,408,520.70 = 12,687,071.40/x
  3. Step 3: Cross multiply
    12,939,013.80x = 19,408,520.70 × 12,687,071.40
  4. Step 4: Simplify right side
    12,939,013.80x = 246,237,287,889,277.97
  5. Step 5: Solve for x
    x = 246,237,287,889,277.97/12,939,013.80
  6. Step 6: Final answer
    x = 19,030,607.10

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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.