Home / 21,148,323.32-31,715,915.47-10,211,713.21

Finding the Fourth Proportional to 21,148,323.32, 31,715,915.47 and 10,211,713.21

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Solution

The fourth proportional to 21,148,323.32, 31,715,915.47 and 10,211,713.21 is: 15,314,397.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,148,323.32 : 31,715,915.47 = 10,211,713.21 : x
  2. Step 2: Convert to fraction form
    21,148,323.32/31,715,915.47 = 10,211,713.21/x
  3. Step 3: Cross multiply
    21,148,323.32x = 31,715,915.47 × 10,211,713.21
  4. Step 4: Simplify right side
    21,148,323.32x = 323,873,833,059,665.88
  5. Step 5: Solve for x
    x = 323,873,833,059,665.88/21,148,323.32
  6. Step 6: Final answer
    x = 15,314,397.66

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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.