Home / 13,680.24-18,958.04-13,417.76

Finding the Fourth Proportional to 13,680.24, 18,958.04 and 13,417.76

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Solution

The fourth proportional to 13,680.24, 18,958.04 and 13,417.76 is: 18,594.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,680.24 : 18,958.04 = 13,417.76 : x
  2. Step 2: Convert to fraction form
    13,680.24/18,958.04 = 13,417.76/x
  3. Step 3: Cross multiply
    13,680.24x = 18,958.04 × 13,417.76
  4. Step 4: Simplify right side
    13,680.24x = 254,374,430.79
  5. Step 5: Solve for x
    x = 254,374,430.79/13,680.24
  6. Step 6: Final answer
    x = 18,594.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.