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Finding the Fourth Proportional to 15,840,622.80, 23,718,943.80 and 12,481,390.80

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Solution

The fourth proportional to 15,840,622.80, 23,718,943.80 and 12,481,390.80 is: 18,689,000.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,840,622.80 : 23,718,943.80 = 12,481,390.80 : x
  2. Step 2: Convert to fraction form
    15,840,622.80/23,718,943.80 = 12,481,390.80/x
  3. Step 3: Cross multiply
    15,840,622.80x = 23,718,943.80 × 12,481,390.80
  4. Step 4: Simplify right side
    15,840,622.80x = 296,045,406,931,037.06
  5. Step 5: Solve for x
    x = 296,045,406,931,037.06/15,840,622.80
  6. Step 6: Final answer
    x = 18,689,000.47

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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.