Home / 18,343.68-25,312.32-13,566.56

Finding the Fourth Proportional to 18,343.68, 25,312.32 and 13,566.56

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Solution

The fourth proportional to 18,343.68, 25,312.32 and 13,566.56 is: 18,720.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,343.68 : 25,312.32 = 13,566.56 : x
  2. Step 2: Convert to fraction form
    18,343.68/25,312.32 = 13,566.56/x
  3. Step 3: Cross multiply
    18,343.68x = 25,312.32 × 13,566.56
  4. Step 4: Simplify right side
    18,343.68x = 343,401,108.02
  5. Step 5: Solve for x
    x = 343,401,108.02/18,343.68
  6. Step 6: Final answer
    x = 18,720.40

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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.