Home / 20,789,643.06-31,163,526.09-8,665,817.40

Finding the Fourth Proportional to 20,789,643.06, 31,163,526.09 and 8,665,817.40

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Solution

The fourth proportional to 20,789,643.06, 31,163,526.09 and 8,665,817.40 is: 12,989,998.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,789,643.06 : 31,163,526.09 = 8,665,817.40 : x
  2. Step 2: Convert to fraction form
    20,789,643.06/31,163,526.09 = 8,665,817.40/x
  3. Step 3: Cross multiply
    20,789,643.06x = 31,163,526.09 × 8,665,817.40
  4. Step 4: Simplify right side
    20,789,643.06x = 270,057,426,636,075.97
  5. Step 5: Solve for x
    x = 270,057,426,636,075.97/20,789,643.06
  6. Step 6: Final answer
    x = 12,989,998.23

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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.