Home / 21,004,637.80-31,554,195.90-20,201,571.40

Finding the Fourth Proportional to 21,004,637.80, 31,554,195.90 and 20,201,571.40

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Solution

The fourth proportional to 21,004,637.80, 31,554,195.90 and 20,201,571.40 is: 30,347,790.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,004,637.80 : 31,554,195.90 = 20,201,571.40 : x
  2. Step 2: Convert to fraction form
    21,004,637.80/31,554,195.90 = 20,201,571.40/x
  3. Step 3: Cross multiply
    21,004,637.80x = 31,554,195.90 × 20,201,571.40
  4. Step 4: Simplify right side
    21,004,637.80x = 637,444,341,443,437.12
  5. Step 5: Solve for x
    x = 637,444,341,443,437.12/21,004,637.80
  6. Step 6: Final answer
    x = 30,347,790.21

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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.