Home / 13,428.08-20,122.97-6,402.34

Finding the Fourth Proportional to 13,428.08, 20,122.97 and 6,402.34

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Solution

The fourth proportional to 13,428.08, 20,122.97 and 6,402.34 is: 9,594.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,428.08 : 20,122.97 = 6,402.34 : x
  2. Step 2: Convert to fraction form
    13,428.08/20,122.97 = 6,402.34/x
  3. Step 3: Cross multiply
    13,428.08x = 20,122.97 × 6,402.34
  4. Step 4: Simplify right side
    13,428.08x = 128,834,088.89
  5. Step 5: Solve for x
    x = 128,834,088.89/13,428.08
  6. Step 6: Final answer
    x = 9,594.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.