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Finding the Fourth Proportional to 18,829,825.20, 28,244,737.80 and 14,573,048.40

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Solution

The fourth proportional to 18,829,825.20, 28,244,737.80 and 14,573,048.40 is: 21,859,572.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,829,825.20 : 28,244,737.80 = 14,573,048.40 : x
  2. Step 2: Convert to fraction form
    18,829,825.20/28,244,737.80 = 14,573,048.40/x
  3. Step 3: Cross multiply
    18,829,825.20x = 28,244,737.80 × 14,573,048.40
  4. Step 4: Simplify right side
    18,829,825.20x = 411,611,931,004,709.56
  5. Step 5: Solve for x
    x = 411,611,931,004,709.56/18,829,825.20
  6. Step 6: Final answer
    x = 21,859,572.60

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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.