Home / 20,228,421.60-30,342,632.40-13,425,976.80

Finding the Fourth Proportional to 20,228,421.60, 30,342,632.40 and 13,425,976.80

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Solution

The fourth proportional to 20,228,421.60, 30,342,632.40 and 13,425,976.80 is: 20,138,965.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,228,421.60 : 30,342,632.40 = 13,425,976.80 : x
  2. Step 2: Convert to fraction form
    20,228,421.60/30,342,632.40 = 13,425,976.80/x
  3. Step 3: Cross multiply
    20,228,421.60x = 30,342,632.40 × 13,425,976.80
  4. Step 4: Simplify right side
    20,228,421.60x = 407,379,478,653,328.31
  5. Step 5: Solve for x
    x = 407,379,478,653,328.31/20,228,421.60
  6. Step 6: Final answer
    x = 20,138,965.20

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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.