Home / 13,422.06-20,133.51-6,402.84

Finding the Fourth Proportional to 13,422.06, 20,133.51 and 6,402.84

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Solution

The fourth proportional to 13,422.06, 20,133.51 and 6,402.84 is: 9,604.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,422.06 : 20,133.51 = 6,402.84 : x
  2. Step 2: Convert to fraction form
    13,422.06/20,133.51 = 6,402.84/x
  3. Step 3: Cross multiply
    13,422.06x = 20,133.51 × 6,402.84
  4. Step 4: Simplify right side
    13,422.06x = 128,911,643.17
  5. Step 5: Solve for x
    x = 128,911,643.17/13,422.06
  6. Step 6: Final answer
    x = 9,604.46

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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.