Home / 20,370,861,017.55-28,111,789,555.99-11,338,425,283.28

Finding the Fourth Proportional to 20,370,861,017.55, 28,111,789,555.99 and 11,338,425,283.28

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Solution

The fourth proportional to 20,370,861,017.55, 28,111,789,555.99 and 11,338,425,283.28 is: 15,647,027,643.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,370,861,017.55 : 28,111,789,555.99 = 11,338,425,283.28 : x
  2. Step 2: Convert to fraction form
    20,370,861,017.55/28,111,789,555.99 = 11,338,425,283.28/x
  3. Step 3: Cross multiply
    20,370,861,017.55x = 28,111,789,555.99 × 11,338,425,283.28
  4. Step 4: Simplify right side
    20,370,861,017.55x = 318,743,425,459,720,421,376
  5. Step 5: Solve for x
    x = 318,743,425,459,720,421,376/20,370,861,017.55
  6. Step 6: Final answer
    x = 15,647,027,643.31

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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.