Home / 21,000,681-28,980,959.22-11,342,889

Finding the Fourth Proportional to 21,000,681, 28,980,959.22 and 11,342,889

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Solution

The fourth proportional to 21,000,681, 28,980,959.22 and 11,342,889 is: 15,653,197.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,000,681 : 28,980,959.22 = 11,342,889 : x
  2. Step 2: Convert to fraction form
    21,000,681/28,980,959.22 = 11,342,889/x
  3. Step 3: Cross multiply
    21,000,681x = 28,980,959.22 × 11,342,889
  4. Step 4: Simplify right side
    21,000,681x = 328,727,803,545,986.56
  5. Step 5: Solve for x
    x = 328,727,803,545,986.56/21,000,681
  6. Step 6: Final answer
    x = 15,653,197.32

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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.