Home / 21,750,003.20-30,007,657.80-12,329,783.58

Finding the Fourth Proportional to 21,750,003.20, 30,007,657.80 and 12,329,783.58

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Solution

The fourth proportional to 21,750,003.20, 30,007,657.80 and 12,329,783.58 is: 17,010,936.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,750,003.20 : 30,007,657.80 = 12,329,783.58 : x
  2. Step 2: Convert to fraction form
    21,750,003.20/30,007,657.80 = 12,329,783.58/x
  3. Step 3: Cross multiply
    21,750,003.20x = 30,007,657.80 × 12,329,783.58
  4. Step 4: Simplify right side
    21,750,003.20x = 369,987,926,416,698.94
  5. Step 5: Solve for x
    x = 369,987,926,416,698.94/21,750,003.20
  6. Step 6: Final answer
    x = 17,010,936.64

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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.