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Finding the Fourth Proportional to 18,688,277.80, 28,032,416.70 and 18,688,277.80

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Solution

The fourth proportional to 18,688,277.80, 28,032,416.70 and 18,688,277.80 is: 28,032,416.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,688,277.80 : 28,032,416.70 = 18,688,277.80 : x
  2. Step 2: Convert to fraction form
    18,688,277.80/28,032,416.70 = 18,688,277.80/x
  3. Step 3: Cross multiply
    18,688,277.80x = 28,032,416.70 × 18,688,277.80
  4. Step 4: Simplify right side
    18,688,277.80x = 523,877,590,694,959.25
  5. Step 5: Solve for x
    x = 523,877,590,694,959.25/18,688,277.80
  6. Step 6: Final answer
    x = 28,032,416.70

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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.