Home / 13,285.67-18,333.51-7,620.15

Finding the Fourth Proportional to 13,285.67, 18,333.51 and 7,620.15

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Solution

The fourth proportional to 13,285.67, 18,333.51 and 7,620.15 is: 10,515.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,285.67 : 18,333.51 = 7,620.15 : x
  2. Step 2: Convert to fraction form
    13,285.67/18,333.51 = 7,620.15/x
  3. Step 3: Cross multiply
    13,285.67x = 18,333.51 × 7,620.15
  4. Step 4: Simplify right side
    13,285.67x = 139,704,096.23
  5. Step 5: Solve for x
    x = 139,704,096.23/13,285.67
  6. Step 6: Final answer
    x = 10,515.40

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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.