Home / 20,513,715.40-30,728,582.70-10,422,022.60

Finding the Fourth Proportional to 20,513,715.40, 30,728,582.70 and 10,422,022.60

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Solution

The fourth proportional to 20,513,715.40, 30,728,582.70 and 10,422,022.60 is: 15,611,700.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,513,715.40 : 30,728,582.70 = 10,422,022.60 : x
  2. Step 2: Convert to fraction form
    20,513,715.40/30,728,582.70 = 10,422,022.60/x
  3. Step 3: Cross multiply
    20,513,715.40x = 30,728,582.70 × 10,422,022.60
  4. Step 4: Simplify right side
    20,513,715.40x = 320,253,983,365,369
  5. Step 5: Solve for x
    x = 320,253,983,365,369/20,513,715.40
  6. Step 6: Final answer
    x = 15,611,700.62

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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.