Home / 20,674,019.40-31,011,029.10-13,446,421.80

Finding the Fourth Proportional to 20,674,019.40, 31,011,029.10 and 13,446,421.80

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Solution

The fourth proportional to 20,674,019.40, 31,011,029.10 and 13,446,421.80 is: 20,169,632.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,674,019.40 : 31,011,029.10 = 13,446,421.80 : x
  2. Step 2: Convert to fraction form
    20,674,019.40/31,011,029.10 = 13,446,421.80/x
  3. Step 3: Cross multiply
    20,674,019.40x = 31,011,029.10 × 13,446,421.80
  4. Step 4: Simplify right side
    20,674,019.40x = 416,987,377,730,674.44
  5. Step 5: Solve for x
    x = 416,987,377,730,674.44/20,674,019.40
  6. Step 6: Final answer
    x = 20,169,632.70

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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.