Home / 21,616,305.86-29,827,556.03-12,912,630.89

Finding the Fourth Proportional to 21,616,305.86, 29,827,556.03 and 12,912,630.89

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Solution

The fourth proportional to 21,616,305.86, 29,827,556.03 and 12,912,630.89 is: 17,817,670.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,616,305.86 : 29,827,556.03 = 12,912,630.89 : x
  2. Step 2: Convert to fraction form
    21,616,305.86/29,827,556.03 = 12,912,630.89/x
  3. Step 3: Cross multiply
    21,616,305.86x = 29,827,556.03 × 12,912,630.89
  4. Step 4: Simplify right side
    21,616,305.86x = 385,152,221,152,482.81
  5. Step 5: Solve for x
    x = 385,152,221,152,482.81/21,616,305.86
  6. Step 6: Final answer
    x = 17,817,670.78

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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.