Home / 20,660,019.40-30,990,029.10-19,400,307.40

Finding the Fourth Proportional to 20,660,019.40, 30,990,029.10 and 19,400,307.40

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Solution

The fourth proportional to 20,660,019.40, 30,990,029.10 and 19,400,307.40 is: 29,100,461.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,660,019.40 : 30,990,029.10 = 19,400,307.40 : x
  2. Step 2: Convert to fraction form
    20,660,019.40/30,990,029.10 = 19,400,307.40/x
  3. Step 3: Cross multiply
    20,660,019.40x = 30,990,029.10 × 19,400,307.40
  4. Step 4: Simplify right side
    20,660,019.40x = 601,216,090,874,945.38
  5. Step 5: Solve for x
    x = 601,216,090,874,945.38/20,660,019.40
  6. Step 6: Final answer
    x = 29,100,461.10

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1.5x scale

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.