Home / 13,276.20-18,321.21-7,307.58

Finding the Fourth Proportional to 13,276.20, 18,321.21 and 7,307.58

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Solution

The fourth proportional to 13,276.20, 18,321.21 and 7,307.58 is: 10,084.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,276.20 : 18,321.21 = 7,307.58 : x
  2. Step 2: Convert to fraction form
    13,276.20/18,321.21 = 7,307.58/x
  3. Step 3: Cross multiply
    13,276.20x = 18,321.21 × 7,307.58
  4. Step 4: Simplify right side
    13,276.20x = 133,883,707.77
  5. Step 5: Solve for x
    x = 133,883,707.77/13,276.20
  6. Step 6: Final answer
    x = 10,084.49

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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.