Home / 20,631,031,657.64-28,470,920,102.72-11,720,849,336.36

Finding the Fourth Proportional to 20,631,031,657.64, 28,470,920,102.72 and 11,720,849,336.36

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Solution

The fourth proportional to 20,631,031,657.64, 28,470,920,102.72 and 11,720,849,336.36 is: 16,174,826,859.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,631,031,657.64 : 28,470,920,102.72 = 11,720,849,336.36 : x
  2. Step 2: Convert to fraction form
    20,631,031,657.64/28,470,920,102.72 = 11,720,849,336.36/x
  3. Step 3: Cross multiply
    20,631,031,657.64x = 28,470,920,102.72 × 11,720,849,336.36
  4. Step 4: Simplify right side
    20,631,031,657.64x = 333,703,364,991,542,689,792
  5. Step 5: Solve for x
    x = 333,703,364,991,542,689,792/20,631,031,657.64
  6. Step 6: Final answer
    x = 16,174,826,859.32

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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.