Home / 21,818.36-30,108.53-13,334.67

Finding the Fourth Proportional to 21,818.36, 30,108.53 and 13,334.67

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Solution

The fourth proportional to 21,818.36, 30,108.53 and 13,334.67 is: 18,401.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,818.36 : 30,108.53 = 13,334.67 : x
  2. Step 2: Convert to fraction form
    21,818.36/30,108.53 = 13,334.67/x
  3. Step 3: Cross multiply
    21,818.36x = 30,108.53 × 13,334.67
  4. Step 4: Simplify right side
    21,818.36x = 401,487,345.07
  5. Step 5: Solve for x
    x = 401,487,345.07/21,818.36
  6. Step 6: Final answer
    x = 18,401.35

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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.