Home / 20,440,404.05-28,200,634.40-13,102,283.21

Finding the Fourth Proportional to 20,440,404.05, 28,200,634.40 and 13,102,283.21

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Solution

The fourth proportional to 20,440,404.05, 28,200,634.40 and 13,102,283.21 is: 18,076,584.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,440,404.05 : 28,200,634.40 = 13,102,283.21 : x
  2. Step 2: Convert to fraction form
    20,440,404.05/28,200,634.40 = 13,102,283.21/x
  3. Step 3: Cross multiply
    20,440,404.05x = 28,200,634.40 × 13,102,283.21
  4. Step 4: Simplify right side
    20,440,404.05x = 369,492,698,502,220.94
  5. Step 5: Solve for x
    x = 369,492,698,502,220.94/20,440,404.05
  6. Step 6: Final answer
    x = 18,076,584.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.