Home / 21,680,220.47-29,915,946.08-12,388,392.85

Finding the Fourth Proportional to 21,680,220.47, 29,915,946.08 and 12,388,392.85

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Solution

The fourth proportional to 21,680,220.47, 29,915,946.08 and 12,388,392.85 is: 17,094,406.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,680,220.47 : 29,915,946.08 = 12,388,392.85 : x
  2. Step 2: Convert to fraction form
    21,680,220.47/29,915,946.08 = 12,388,392.85/x
  3. Step 3: Cross multiply
    21,680,220.47x = 29,915,946.08 × 12,388,392.85
  4. Step 4: Simplify right side
    21,680,220.47x = 370,610,492,474,638.62
  5. Step 5: Solve for x
    x = 370,610,492,474,638.62/21,680,220.47
  6. Step 6: Final answer
    x = 17,094,406.07

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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.