Home / 13,378.17-18,461.60-7,409.82

Finding the Fourth Proportional to 13,378.17, 18,461.60 and 7,409.82

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Solution

The fourth proportional to 13,378.17, 18,461.60 and 7,409.82 is: 10,225.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,378.17 : 18,461.60 = 7,409.82 : x
  2. Step 2: Convert to fraction form
    13,378.17/18,461.60 = 7,409.82/x
  3. Step 3: Cross multiply
    13,378.17x = 18,461.60 × 7,409.82
  4. Step 4: Simplify right side
    13,378.17x = 136,797,003.55
  5. Step 5: Solve for x
    x = 136,797,003.55/13,378.17
  6. Step 6: Final answer
    x = 10,225.39

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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.