Home / 21,045.81-31,571.73-7,001.22

Finding the Fourth Proportional to 21,045.81, 31,571.73 and 7,001.22

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Solution

The fourth proportional to 21,045.81, 31,571.73 and 7,001.22 is: 10,502.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,045.81 : 31,571.73 = 7,001.22 : x
  2. Step 2: Convert to fraction form
    21,045.81/31,571.73 = 7,001.22/x
  3. Step 3: Cross multiply
    21,045.81x = 31,571.73 × 7,001.22
  4. Step 4: Simplify right side
    21,045.81x = 221,040,627.51
  5. Step 5: Solve for x
    x = 221,040,627.51/21,045.81
  6. Step 6: Final answer
    x = 10,502.83

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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.