Home / 21,318,911.70-31,971,206.61-6,938,597.49

Finding the Fourth Proportional to 21,318,911.70, 31,971,206.61 and 6,938,597.49

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Solution

The fourth proportional to 21,318,911.70, 31,971,206.61 and 6,938,597.49 is: 10,405,565.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,318,911.70 : 31,971,206.61 = 6,938,597.49 : x
  2. Step 2: Convert to fraction form
    21,318,911.70/31,971,206.61 = 6,938,597.49/x
  3. Step 3: Cross multiply
    21,318,911.70x = 31,971,206.61 × 6,938,597.49
  4. Step 4: Simplify right side
    21,318,911.70x = 221,835,333,936,417.41
  5. Step 5: Solve for x
    x = 221,835,333,936,417.41/21,318,911.70
  6. Step 6: Final answer
    x = 10,405,565.59

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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.