Home / 21,286,280.80-31,929,421.20-5,329,928.80

Finding the Fourth Proportional to 21,286,280.80, 31,929,421.20 and 5,329,928.80

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Solution

The fourth proportional to 21,286,280.80, 31,929,421.20 and 5,329,928.80 is: 7,994,893.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,286,280.80 : 31,929,421.20 = 5,329,928.80 : x
  2. Step 2: Convert to fraction form
    21,286,280.80/31,929,421.20 = 5,329,928.80/x
  3. Step 3: Cross multiply
    21,286,280.80x = 31,929,421.20 × 5,329,928.80
  4. Step 4: Simplify right side
    21,286,280.80x = 170,181,541,621,210.56
  5. Step 5: Solve for x
    x = 170,181,541,621,210.56/21,286,280.80
  6. Step 6: Final answer
    x = 7,994,893.20

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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.