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Finding the Fourth Proportional to 13,287,930.20, 18,615,699.40 and 13,287,930.20

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Solution

The fourth proportional to 13,287,930.20, 18,615,699.40 and 13,287,930.20 is: 18,615,699.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,287,930.20 : 18,615,699.40 = 13,287,930.20 : x
  2. Step 2: Convert to fraction form
    13,287,930.20/18,615,699.40 = 13,287,930.20/x
  3. Step 3: Cross multiply
    13,287,930.20x = 18,615,699.40 × 13,287,930.20
  4. Step 4: Simplify right side
    13,287,930.20x = 247,364,114,251,381.84
  5. Step 5: Solve for x
    x = 247,364,114,251,381.84/13,287,930.20
  6. Step 6: Final answer
    x = 18,615,699.40

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.