Home / 15,408.40-21,263.46-8,334.76

Finding the Fourth Proportional to 15,408.40, 21,263.46 and 8,334.76

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Solution

The fourth proportional to 15,408.40, 21,263.46 and 8,334.76 is: 11,501.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,408.40 : 21,263.46 = 8,334.76 : x
  2. Step 2: Convert to fraction form
    15,408.40/21,263.46 = 8,334.76/x
  3. Step 3: Cross multiply
    15,408.40x = 21,263.46 × 8,334.76
  4. Step 4: Simplify right side
    15,408.40x = 177,225,835.87
  5. Step 5: Solve for x
    x = 177,225,835.87/15,408.40
  6. Step 6: Final answer
    x = 11,501.90

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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.