Home / 12,866,871.65-19,300,928.16-4,230,780.89

Finding the Fourth Proportional to 12,866,871.65, 19,300,928.16 and 4,230,780.89

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Solution

The fourth proportional to 12,866,871.65, 19,300,928.16 and 4,230,780.89 is: 6,346,375.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,866,871.65 : 19,300,928.16 = 4,230,780.89 : x
  2. Step 2: Convert to fraction form
    12,866,871.65/19,300,928.16 = 4,230,780.89/x
  3. Step 3: Cross multiply
    12,866,871.65x = 19,300,928.16 × 4,230,780.89
  4. Step 4: Simplify right side
    12,866,871.65x = 81,657,998,018,590.86
  5. Step 5: Solve for x
    x = 81,657,998,018,590.86/12,866,871.65
  6. Step 6: Final answer
    x = 6,346,375.42

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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.