Home / 20,518,157.35-30,785,714.29-8,997,663.43

Finding the Fourth Proportional to 20,518,157.35, 30,785,714.29 and 8,997,663.43

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Solution

The fourth proportional to 20,518,157.35, 30,785,714.29 and 8,997,663.43 is: 13,500,213.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,518,157.35 : 30,785,714.29 = 8,997,663.43 : x
  2. Step 2: Convert to fraction form
    20,518,157.35/30,785,714.29 = 8,997,663.43/x
  3. Step 3: Cross multiply
    20,518,157.35x = 30,785,714.29 × 8,997,663.43
  4. Step 4: Simplify right side
    20,518,157.35x = 276,999,495,479,632.84
  5. Step 5: Solve for x
    x = 276,999,495,479,632.84/20,518,157.35
  6. Step 6: Final answer
    x = 13,500,213.05

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.