Home / 21,977,211.40-32,979,813.90-12,879,291.40

Finding the Fourth Proportional to 21,977,211.40, 32,979,813.90 and 12,879,291.40

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Solution

The fourth proportional to 21,977,211.40, 32,979,813.90 and 12,879,291.40 is: 19,327,139.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,977,211.40 : 32,979,813.90 = 12,879,291.40 : x
  2. Step 2: Convert to fraction form
    21,977,211.40/32,979,813.90 = 12,879,291.40/x
  3. Step 3: Cross multiply
    21,977,211.40x = 32,979,813.90 × 12,879,291.40
  4. Step 4: Simplify right side
    21,977,211.40x = 424,756,633,535,870.44
  5. Step 5: Solve for x
    x = 424,756,633,535,870.44/21,977,211.40
  6. Step 6: Final answer
    x = 19,327,139.64

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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.