Home / 18,638.10-25,721.19-10,681.83

Finding the Fourth Proportional to 18,638.10, 25,721.19 and 10,681.83

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Solution

The fourth proportional to 18,638.10, 25,721.19 and 10,681.83 is: 14,741.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,638.10 : 25,721.19 = 10,681.83 : x
  2. Step 2: Convert to fraction form
    18,638.10/25,721.19 = 10,681.83/x
  3. Step 3: Cross multiply
    18,638.10x = 25,721.19 × 10,681.83
  4. Step 4: Simplify right side
    18,638.10x = 274,749,378.98
  5. Step 5: Solve for x
    x = 274,749,378.98/18,638.10
  6. Step 6: Final answer
    x = 14,741.28

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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.