Home / 21,171,515.72-31,759,168.08-8,217,362.72

Finding the Fourth Proportional to 21,171,515.72, 31,759,168.08 and 8,217,362.72

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Solution

The fourth proportional to 21,171,515.72, 31,759,168.08 and 8,217,362.72 is: 12,326,779.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,171,515.72 : 31,759,168.08 = 8,217,362.72 : x
  2. Step 2: Convert to fraction form
    21,171,515.72/31,759,168.08 = 8,217,362.72/x
  3. Step 3: Cross multiply
    21,171,515.72x = 31,759,168.08 × 8,217,362.72
  4. Step 4: Simplify right side
    21,171,515.72x = 260,976,603,798,805.97
  5. Step 5: Solve for x
    x = 260,976,603,798,805.97/21,171,515.72
  6. Step 6: Final answer
    x = 12,326,779.40

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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.