Home / 21,507,905.80-32,261,858.70-20,657,600.20

Finding the Fourth Proportional to 21,507,905.80, 32,261,858.70 and 20,657,600.20

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Solution

The fourth proportional to 21,507,905.80, 32,261,858.70 and 20,657,600.20 is: 30,986,400.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,507,905.80 : 32,261,858.70 = 20,657,600.20 : x
  2. Step 2: Convert to fraction form
    21,507,905.80/32,261,858.70 = 20,657,600.20/x
  3. Step 3: Cross multiply
    21,507,905.80x = 32,261,858.70 × 20,657,600.20
  4. Step 4: Simplify right side
    21,507,905.80x = 666,452,578,733,491.75
  5. Step 5: Solve for x
    x = 666,452,578,733,491.75/21,507,905.80
  6. Step 6: Final answer
    x = 30,986,400.30

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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.