Home / 21,085,217.10-31,606,830.45-9,705,818.70

Finding the Fourth Proportional to 21,085,217.10, 31,606,830.45 and 9,705,818.70

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Solution

The fourth proportional to 21,085,217.10, 31,606,830.45 and 9,705,818.70 is: 14,549,063.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,085,217.10 : 31,606,830.45 = 9,705,818.70 : x
  2. Step 2: Convert to fraction form
    21,085,217.10/31,606,830.45 = 9,705,818.70/x
  3. Step 3: Cross multiply
    21,085,217.10x = 31,606,830.45 × 9,705,818.70
  4. Step 4: Simplify right side
    21,085,217.10x = 306,770,166,029,339.38
  5. Step 5: Solve for x
    x = 306,770,166,029,339.38/21,085,217.10
  6. Step 6: Final answer
    x = 14,549,063.67

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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.