Home / 28,115,921,158.88-38,800,563,819.36-15,428,545,852.64

Finding the Fourth Proportional to 28,115,921,158.88, 38,800,563,819.36 and 15,428,545,852.64

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Solution

The fourth proportional to 28,115,921,158.88, 38,800,563,819.36 and 15,428,545,852.64 is: 21,291,718,475.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,115,921,158.88 : 38,800,563,819.36 = 15,428,545,852.64 : x
  2. Step 2: Convert to fraction form
    28,115,921,158.88/38,800,563,819.36 = 15,428,545,852.64/x
  3. Step 3: Cross multiply
    28,115,921,158.88x = 38,800,563,819.36 × 15,428,545,852.64
  4. Step 4: Simplify right side
    28,115,921,158.88x = 598,636,277,995,280,400,384
  5. Step 5: Solve for x
    x = 598,636,277,995,280,400,384/28,115,921,158.88
  6. Step 6: Final answer
    x = 21,291,718,475.54

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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.