Home / 20,755,821,607.08-28,642,891,192.80-11,240,155,601.28

Finding the Fourth Proportional to 20,755,821,607.08, 28,642,891,192.80 and 11,240,155,601.28

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Solution

The fourth proportional to 20,755,821,607.08, 28,642,891,192.80 and 11,240,155,601.28 is: 15,511,337,492.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,755,821,607.08 : 28,642,891,192.80 = 11,240,155,601.28 : x
  2. Step 2: Convert to fraction form
    20,755,821,607.08/28,642,891,192.80 = 11,240,155,601.28/x
  3. Step 3: Cross multiply
    20,755,821,607.08x = 28,642,891,192.80 × 11,240,155,601.28
  4. Step 4: Simplify right side
    20,755,821,607.08x = 321,950,553,877,604,532,224
  5. Step 5: Solve for x
    x = 321,950,553,877,604,532,224/20,755,821,607.08
  6. Step 6: Final answer
    x = 15,511,337,492.31

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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.