Home / 21,005,629.68-31,509,428.67-10,210,061.87

Finding the Fourth Proportional to 21,005,629.68, 31,509,428.67 and 10,210,061.87

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Solution

The fourth proportional to 21,005,629.68, 31,509,428.67 and 10,210,061.87 is: 15,315,571.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,005,629.68 : 31,509,428.67 = 10,210,061.87 : x
  2. Step 2: Convert to fraction form
    21,005,629.68/31,509,428.67 = 10,210,061.87/x
  3. Step 3: Cross multiply
    21,005,629.68x = 31,509,428.67 × 10,210,061.87
  4. Step 4: Simplify right side
    21,005,629.68x = 321,713,216,051,504.69
  5. Step 5: Solve for x
    x = 321,713,216,051,504.69/21,005,629.68
  6. Step 6: Final answer
    x = 15,315,571.16

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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.