Home / 21,069,692.65-31,604,579.63-8,121,940.57

Finding the Fourth Proportional to 21,069,692.65, 31,604,579.63 and 8,121,940.57

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Solution

The fourth proportional to 21,069,692.65, 31,604,579.63 and 8,121,940.57 is: 12,182,926.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,069,692.65 : 31,604,579.63 = 8,121,940.57 : x
  2. Step 2: Convert to fraction form
    21,069,692.65/31,604,579.63 = 8,121,940.57/x
  3. Step 3: Cross multiply
    21,069,692.65x = 31,604,579.63 × 8,121,940.57
  4. Step 4: Simplify right side
    21,069,692.65x = 256,690,517,405,528.72
  5. Step 5: Solve for x
    x = 256,690,517,405,528.72/21,069,692.65
  6. Step 6: Final answer
    x = 12,182,926.52

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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.