Home / 28,271,571.70-39,016,435.48-21,289,931.64

Finding the Fourth Proportional to 28,271,571.70, 39,016,435.48 and 21,289,931.64

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Solution

The fourth proportional to 28,271,571.70, 39,016,435.48 and 21,289,931.64 is: 29,381,360.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,271,571.70 : 39,016,435.48 = 21,289,931.64 : x
  2. Step 2: Convert to fraction form
    28,271,571.70/39,016,435.48 = 21,289,931.64/x
  3. Step 3: Cross multiply
    28,271,571.70x = 39,016,435.48 × 21,289,931.64
  4. Step 4: Simplify right side
    28,271,571.70x = 830,657,243,904,138.88
  5. Step 5: Solve for x
    x = 830,657,243,904,138.88/28,271,571.70
  6. Step 6: Final answer
    x = 29,381,360.64

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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.