Home / 13,045.92-18,003.40-7,077.60

Finding the Fourth Proportional to 13,045.92, 18,003.40 and 7,077.60

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Solution

The fourth proportional to 13,045.92, 18,003.40 and 7,077.60 is: 9,767.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,045.92 : 18,003.40 = 7,077.60 : x
  2. Step 2: Convert to fraction form
    13,045.92/18,003.40 = 7,077.60/x
  3. Step 3: Cross multiply
    13,045.92x = 18,003.40 × 7,077.60
  4. Step 4: Simplify right side
    13,045.92x = 127,420,863.84
  5. Step 5: Solve for x
    x = 127,420,863.84/13,045.92
  6. Step 6: Final answer
    x = 9,767.10

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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.