Home / 18,401.34-25,390.35-11,688.06

Finding the Fourth Proportional to 18,401.34, 25,390.35 and 11,688.06

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Solution

The fourth proportional to 18,401.34, 25,390.35 and 11,688.06 is: 16,127.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,401.34 : 25,390.35 = 11,688.06 : x
  2. Step 2: Convert to fraction form
    18,401.34/25,390.35 = 11,688.06/x
  3. Step 3: Cross multiply
    18,401.34x = 25,390.35 × 11,688.06
  4. Step 4: Simplify right side
    18,401.34x = 296,763,934.22
  5. Step 5: Solve for x
    x = 296,763,934.22/18,401.34
  6. Step 6: Final answer
    x = 16,127.30

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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.