Home / 13,378.03-18,461.71-7,409.79

Finding the Fourth Proportional to 13,378.03, 18,461.71 and 7,409.79

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Solution

The fourth proportional to 13,378.03, 18,461.71 and 7,409.79 is: 10,225.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,378.03 : 18,461.71 = 7,409.79 : x
  2. Step 2: Convert to fraction form
    13,378.03/18,461.71 = 7,409.79/x
  3. Step 3: Cross multiply
    13,378.03x = 18,461.71 × 7,409.79
  4. Step 4: Simplify right side
    13,378.03x = 136,797,403.40
  5. Step 5: Solve for x
    x = 136,797,403.40/13,378.03
  6. Step 6: Final answer
    x = 10,225.53

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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.