Home / 21,111.67-31,667.49-10,012.31

Finding the Fourth Proportional to 21,111.67, 31,667.49 and 10,012.31

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Solution

The fourth proportional to 21,111.67, 31,667.49 and 10,012.31 is: 15,018.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,111.67 : 31,667.49 = 10,012.31 : x
  2. Step 2: Convert to fraction form
    21,111.67/31,667.49 = 10,012.31/x
  3. Step 3: Cross multiply
    21,111.67x = 31,667.49 × 10,012.31
  4. Step 4: Simplify right side
    21,111.67x = 317,064,726.80
  5. Step 5: Solve for x
    x = 317,064,726.80/21,111.67
  6. Step 6: Final answer
    x = 15,018.46

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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.