Home / 15,820,723,438.79-21,822,667,488.20-9,385,987,732.36

Finding the Fourth Proportional to 15,820,723,438.79, 21,822,667,488.20 and 9,385,987,732.36

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Solution

The fourth proportional to 15,820,723,438.79, 21,822,667,488.20 and 9,385,987,732.36 is: 12,946,771,373.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,820,723,438.79 : 21,822,667,488.20 = 9,385,987,732.36 : x
  2. Step 2: Convert to fraction form
    15,820,723,438.79/21,822,667,488.20 = 9,385,987,732.36/x
  3. Step 3: Cross multiply
    15,820,723,438.79x = 21,822,667,488.20 × 9,385,987,732.36
  4. Step 4: Simplify right side
    15,820,723,438.79x = 204,827,289,331,582,992,384
  5. Step 5: Solve for x
    x = 204,827,289,331,582,992,384/15,820,723,438.79
  6. Step 6: Final answer
    x = 12,946,771,373.90

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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.