Home / 21,243,830.30-31,865,696.82-9,105,423.02

Finding the Fourth Proportional to 21,243,830.30, 31,865,696.82 and 9,105,423.02

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Solution

The fourth proportional to 21,243,830.30, 31,865,696.82 and 9,105,423.02 is: 13,658,113.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,243,830.30 : 31,865,696.82 = 9,105,423.02 : x
  2. Step 2: Convert to fraction form
    21,243,830.30/31,865,696.82 = 9,105,423.02/x
  3. Step 3: Cross multiply
    21,243,830.30x = 31,865,696.82 × 9,105,423.02
  4. Step 4: Simplify right side
    21,243,830.30x = 290,150,649,373,168.81
  5. Step 5: Solve for x
    x = 290,150,649,373,168.81/21,243,830.30
  6. Step 6: Final answer
    x = 13,658,113.69

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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.