Home / 13,638.08-18,821.76-10,292.24

Finding the Fourth Proportional to 13,638.08, 18,821.76 and 10,292.24

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Solution

The fourth proportional to 13,638.08, 18,821.76 and 10,292.24 is: 14,204.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,638.08 : 18,821.76 = 10,292.24 : x
  2. Step 2: Convert to fraction form
    13,638.08/18,821.76 = 10,292.24/x
  3. Step 3: Cross multiply
    13,638.08x = 18,821.76 × 10,292.24
  4. Step 4: Simplify right side
    13,638.08x = 193,718,071.14
  5. Step 5: Solve for x
    x = 193,718,071.14/13,638.08
  6. Step 6: Final answer
    x = 14,204.20

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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.