Home / 21,000,685-28,980,964.74-11,342,893

Finding the Fourth Proportional to 21,000,685, 28,980,964.74 and 11,342,893

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Solution

The fourth proportional to 21,000,685, 28,980,964.74 and 11,342,893 is: 15,653,202.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,000,685 : 28,980,964.74 = 11,342,893 : x
  2. Step 2: Convert to fraction form
    21,000,685/28,980,964.74 = 11,342,893/x
  3. Step 3: Cross multiply
    21,000,685x = 28,980,964.74 × 11,342,893
  4. Step 4: Simplify right side
    21,000,685x = 328,727,982,082,592.81
  5. Step 5: Solve for x
    x = 328,727,982,082,592.81/21,000,685
  6. Step 6: Final answer
    x = 15,653,202.84

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.