Home / 12,939,010.80-19,408,516.20-12,687,068.40

Finding the Fourth Proportional to 12,939,010.80, 19,408,516.20 and 12,687,068.40

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Solution

The fourth proportional to 12,939,010.80, 19,408,516.20 and 12,687,068.40 is: 19,030,602.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,939,010.80 : 19,408,516.20 = 12,687,068.40 : x
  2. Step 2: Convert to fraction form
    12,939,010.80/19,408,516.20 = 12,687,068.40/x
  3. Step 3: Cross multiply
    12,939,010.80x = 19,408,516.20 × 12,687,068.40
  4. Step 4: Simplify right side
    12,939,010.80x = 246,237,172,571,908.06
  5. Step 5: Solve for x
    x = 246,237,172,571,908.06/12,939,010.80
  6. Step 6: Final answer
    x = 19,030,602.60

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1.5x scale

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.