Home / 21,513.05-29,687.80-11,822.67

Finding the Fourth Proportional to 21,513.05, 29,687.80 and 11,822.67

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Solution

The fourth proportional to 21,513.05, 29,687.80 and 11,822.67 is: 16,315.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,513.05 : 29,687.80 = 11,822.67 : x
  2. Step 2: Convert to fraction form
    21,513.05/29,687.80 = 11,822.67/x
  3. Step 3: Cross multiply
    21,513.05x = 29,687.80 × 11,822.67
  4. Step 4: Simplify right side
    21,513.05x = 350,989,055.04
  5. Step 5: Solve for x
    x = 350,989,055.04/21,513.05
  6. Step 6: Final answer
    x = 16,315.17

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1.5x scale

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.