Home / 13,402.18-20,223.29-12,862.72

Finding the Fourth Proportional to 13,402.18, 20,223.29 and 12,862.72

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Solution

The fourth proportional to 13,402.18, 20,223.29 and 12,862.72 is: 19,409.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,402.18 : 20,223.29 = 12,862.72 : x
  2. Step 2: Convert to fraction form
    13,402.18/20,223.29 = 12,862.72/x
  3. Step 3: Cross multiply
    13,402.18x = 20,223.29 × 12,862.72
  4. Step 4: Simplify right side
    13,402.18x = 260,126,516.75
  5. Step 5: Solve for x
    x = 260,126,516.75/13,402.18
  6. Step 6: Final answer
    x = 19,409.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.