Home / 28,271,571.45-39,016,435.13-21,289,931.39

Finding the Fourth Proportional to 28,271,571.45, 39,016,435.13 and 21,289,931.39

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Solution

The fourth proportional to 28,271,571.45, 39,016,435.13 and 21,289,931.39 is: 29,381,360.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,271,571.45 : 39,016,435.13 = 21,289,931.39 : x
  2. Step 2: Convert to fraction form
    28,271,571.45/39,016,435.13 = 21,289,931.39/x
  3. Step 3: Cross multiply
    28,271,571.45x = 39,016,435.13 × 21,289,931.39
  4. Step 4: Simplify right side
    28,271,571.45x = 830,657,226,805,003.62
  5. Step 5: Solve for x
    x = 830,657,226,805,003.62/28,271,571.45
  6. Step 6: Final answer
    x = 29,381,360.30

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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.