Home / 13,280.82-18,327.60-7,312.62

Finding the Fourth Proportional to 13,280.82, 18,327.60 and 7,312.62

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Solution

The fourth proportional to 13,280.82, 18,327.60 and 7,312.62 is: 10,091.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,280.82 : 18,327.60 = 7,312.62 : x
  2. Step 2: Convert to fraction form
    13,280.82/18,327.60 = 7,312.62/x
  3. Step 3: Cross multiply
    13,280.82x = 18,327.60 × 7,312.62
  4. Step 4: Simplify right side
    13,280.82x = 134,022,774.31
  5. Step 5: Solve for x
    x = 134,022,774.31/13,280.82
  6. Step 6: Final answer
    x = 10,091.45

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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.