Home / 12,310,780.47-16,980,066.21-8,640,516.03

Finding the Fourth Proportional to 12,310,780.47, 16,980,066.21 and 8,640,516.03

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Solution

The fourth proportional to 12,310,780.47, 16,980,066.21 and 8,640,516.03 is: 11,917,728.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,310,780.47 : 16,980,066.21 = 8,640,516.03 : x
  2. Step 2: Convert to fraction form
    12,310,780.47/16,980,066.21 = 8,640,516.03/x
  3. Step 3: Cross multiply
    12,310,780.47x = 16,980,066.21 × 8,640,516.03
  4. Step 4: Simplify right side
    12,310,780.47x = 146,716,534,277,966.34
  5. Step 5: Solve for x
    x = 146,716,534,277,966.34/12,310,780.47
  6. Step 6: Final answer
    x = 11,917,728.09

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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.