Home / 21,000,803.10-31,438,219.05-12,476,751.90

Finding the Fourth Proportional to 21,000,803.10, 31,438,219.05 and 12,476,751.90

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Solution

The fourth proportional to 21,000,803.10, 31,438,219.05 and 12,476,751.90 is: 18,677,707.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,000,803.10 : 31,438,219.05 = 12,476,751.90 : x
  2. Step 2: Convert to fraction form
    21,000,803.10/31,438,219.05 = 12,476,751.90/x
  3. Step 3: Cross multiply
    21,000,803.10x = 31,438,219.05 × 12,476,751.90
  4. Step 4: Simplify right side
    21,000,803.10x = 392,246,859,264,703.69
  5. Step 5: Solve for x
    x = 392,246,859,264,703.69/21,000,803.10
  6. Step 6: Final answer
    x = 18,677,707.58

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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.