Home / 13,422.63-20,125.05-6,403.72

Finding the Fourth Proportional to 13,422.63, 20,125.05 and 6,403.72

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Solution

The fourth proportional to 13,422.63, 20,125.05 and 6,403.72 is: 9,601.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,422.63 : 20,125.05 = 6,403.72 : x
  2. Step 2: Convert to fraction form
    13,422.63/20,125.05 = 6,403.72/x
  3. Step 3: Cross multiply
    13,422.63x = 20,125.05 × 6,403.72
  4. Step 4: Simplify right side
    13,422.63x = 128,875,278.52
  5. Step 5: Solve for x
    x = 128,875,278.52/13,422.63
  6. Step 6: Final answer
    x = 9,601.35

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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.