Home / 21,303,028.80-31,954,543.20-13,225,125.60

Finding the Fourth Proportional to 21,303,028.80, 31,954,543.20 and 13,225,125.60

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Solution

The fourth proportional to 21,303,028.80, 31,954,543.20 and 13,225,125.60 is: 19,837,688.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,303,028.80 : 31,954,543.20 = 13,225,125.60 : x
  2. Step 2: Convert to fraction form
    21,303,028.80/31,954,543.20 = 13,225,125.60/x
  3. Step 3: Cross multiply
    21,303,028.80x = 31,954,543.20 × 13,225,125.60
  4. Step 4: Simplify right side
    21,303,028.80x = 422,602,847,310,625.88
  5. Step 5: Solve for x
    x = 422,602,847,310,625.88/21,303,028.80
  6. Step 6: Final answer
    x = 19,837,688.40

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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.