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Finding the Fourth Proportional to 13,285,397.40, 19,892,666.70 and 13,285,397.40

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Solution

The fourth proportional to 13,285,397.40, 19,892,666.70 and 13,285,397.40 is: 19,892,666.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,285,397.40 : 19,892,666.70 = 13,285,397.40 : x
  2. Step 2: Convert to fraction form
    13,285,397.40/19,892,666.70 = 13,285,397.40/x
  3. Step 3: Cross multiply
    13,285,397.40x = 19,892,666.70 × 13,285,397.40
  4. Step 4: Simplify right side
    13,285,397.40x = 264,281,982,455,246.56
  5. Step 5: Solve for x
    x = 264,281,982,455,246.56/13,285,397.40
  6. Step 6: Final answer
    x = 19,892,666.70

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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.