Home / 20,736,012.90-31,104,019.36-20,400,089.70

Finding the Fourth Proportional to 20,736,012.90, 31,104,019.36 and 20,400,089.70

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Solution

The fourth proportional to 20,736,012.90, 31,104,019.36 and 20,400,089.70 is: 30,600,134.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,736,012.90 : 31,104,019.36 = 20,400,089.70 : x
  2. Step 2: Convert to fraction form
    20,736,012.90/31,104,019.36 = 20,400,089.70/x
  3. Step 3: Cross multiply
    20,736,012.90x = 31,104,019.36 × 20,400,089.70
  4. Step 4: Simplify right side
    20,736,012.90x = 634,524,784,974,536.50
  5. Step 5: Solve for x
    x = 634,524,784,974,536.50/20,736,012.90
  6. Step 6: Final answer
    x = 30,600,134.56

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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.