Home / 20,666,480.81-28,519,716.87-12,823,075.85

Finding the Fourth Proportional to 20,666,480.81, 28,519,716.87 and 12,823,075.85

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Solution

The fourth proportional to 20,666,480.81, 28,519,716.87 and 12,823,075.85 is: 17,695,828.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,666,480.81 : 28,519,716.87 = 12,823,075.85 : x
  2. Step 2: Convert to fraction form
    20,666,480.81/28,519,716.87 = 12,823,075.85/x
  3. Step 3: Cross multiply
    20,666,480.81x = 28,519,716.87 × 12,823,075.85
  4. Step 4: Simplify right side
    20,666,480.81x = 365,710,492,501,936.06
  5. Step 5: Solve for x
    x = 365,710,492,501,936.06/20,666,480.81
  6. Step 6: Final answer
    x = 17,695,828.14

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.