Home / 13,087.36-18,064.44-7,785.40

Finding the Fourth Proportional to 13,087.36, 18,064.44 and 7,785.40

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Solution

The fourth proportional to 13,087.36, 18,064.44 and 7,785.40 is: 10,746.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,087.36 : 18,064.44 = 7,785.40 : x
  2. Step 2: Convert to fraction form
    13,087.36/18,064.44 = 7,785.40/x
  3. Step 3: Cross multiply
    13,087.36x = 18,064.44 × 7,785.40
  4. Step 4: Simplify right side
    13,087.36x = 140,638,891.18
  5. Step 5: Solve for x
    x = 140,638,891.18/13,087.36
  6. Step 6: Final answer
    x = 10,746.16

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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.