Home / 13,071.06-18,038.30-7,102.71

Finding the Fourth Proportional to 13,071.06, 18,038.30 and 7,102.71

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Solution

The fourth proportional to 13,071.06, 18,038.30 and 7,102.71 is: 9,801.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,071.06 : 18,038.30 = 7,102.71 : x
  2. Step 2: Convert to fraction form
    13,071.06/18,038.30 = 7,102.71/x
  3. Step 3: Cross multiply
    13,071.06x = 18,038.30 × 7,102.71
  4. Step 4: Simplify right side
    13,071.06x = 128,120,778.28
  5. Step 5: Solve for x
    x = 128,120,778.28/13,071.06
  6. Step 6: Final answer
    x = 9,801.87

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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.