Home / 21,538,410.80-32,307,616.20-20,688,105.20

Finding the Fourth Proportional to 21,538,410.80, 32,307,616.20 and 20,688,105.20

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Solution

The fourth proportional to 21,538,410.80, 32,307,616.20 and 20,688,105.20 is: 31,032,157.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,538,410.80 : 32,307,616.20 = 20,688,105.20 : x
  2. Step 2: Convert to fraction form
    21,538,410.80/32,307,616.20 = 20,688,105.20/x
  3. Step 3: Cross multiply
    21,538,410.80x = 32,307,616.20 × 20,688,105.20
  4. Step 4: Simplify right side
    21,538,410.80x = 668,383,362,706,824.25
  5. Step 5: Solve for x
    x = 668,383,362,706,824.25/21,538,410.80
  6. Step 6: Final answer
    x = 31,032,157.80

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1.5x scale

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.