Home / 21,006.49-28,966.67-18,890.77

Finding the Fourth Proportional to 21,006.49, 28,966.67 and 18,890.77

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Solution

The fourth proportional to 21,006.49, 28,966.67 and 18,890.77 is: 26,049.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,006.49 : 28,966.67 = 18,890.77 : x
  2. Step 2: Convert to fraction form
    21,006.49/28,966.67 = 18,890.77/x
  3. Step 3: Cross multiply
    21,006.49x = 28,966.67 × 18,890.77
  4. Step 4: Simplify right side
    21,006.49x = 547,202,606.18
  5. Step 5: Solve for x
    x = 547,202,606.18/21,006.49
  6. Step 6: Final answer
    x = 26,049.22

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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.