Home / 13,353.41-18,432.34-7,690.41

Finding the Fourth Proportional to 13,353.41, 18,432.34 and 7,690.41

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Solution

The fourth proportional to 13,353.41, 18,432.34 and 7,690.41 is: 10,615.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,353.41 : 18,432.34 = 7,690.41 : x
  2. Step 2: Convert to fraction form
    13,353.41/18,432.34 = 7,690.41/x
  3. Step 3: Cross multiply
    13,353.41x = 18,432.34 × 7,690.41
  4. Step 4: Simplify right side
    13,353.41x = 141,752,251.86
  5. Step 5: Solve for x
    x = 141,752,251.86/13,353.41
  6. Step 6: Final answer
    x = 10,615.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.