Home / 20,486,997.36-28,271,998.32-11,319,574.80

Finding the Fourth Proportional to 20,486,997.36, 28,271,998.32 and 11,319,574.80

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Solution

The fourth proportional to 20,486,997.36, 28,271,998.32 and 11,319,574.80 is: 15,620,981.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,486,997.36 : 28,271,998.32 = 11,319,574.80 : x
  2. Step 2: Convert to fraction form
    20,486,997.36/28,271,998.32 = 11,319,574.80/x
  3. Step 3: Cross multiply
    20,486,997.36x = 28,271,998.32 × 11,319,574.80
  4. Step 4: Simplify right side
    20,486,997.36x = 320,026,999,728,714.38
  5. Step 5: Solve for x
    x = 320,026,999,728,714.38/20,486,997.36
  6. Step 6: Final answer
    x = 15,620,981.16

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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.