Home / 20,513,627.40-30,728,450.70-10,421,934.60

Finding the Fourth Proportional to 20,513,627.40, 30,728,450.70 and 10,421,934.60

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Solution

The fourth proportional to 20,513,627.40, 30,728,450.70 and 10,421,934.60 is: 15,611,568.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,513,627.40 : 30,728,450.70 = 10,421,934.60 : x
  2. Step 2: Convert to fraction form
    20,513,627.40/30,728,450.70 = 10,421,934.60/x
  3. Step 3: Cross multiply
    20,513,627.40x = 30,728,450.70 × 10,421,934.60
  4. Step 4: Simplify right side
    20,513,627.40x = 320,249,903,554,724.19
  5. Step 5: Solve for x
    x = 320,249,903,554,724.19/20,513,627.40
  6. Step 6: Final answer
    x = 15,611,568.71

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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.