Home / 13,071.22-18,038.57-7,103.28

Finding the Fourth Proportional to 13,071.22, 18,038.57 and 7,103.28

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Solution

The fourth proportional to 13,071.22, 18,038.57 and 7,103.28 is: 9,802.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,071.22 : 18,038.57 = 7,103.28 : x
  2. Step 2: Convert to fraction form
    13,071.22/18,038.57 = 7,103.28/x
  3. Step 3: Cross multiply
    13,071.22x = 18,038.57 × 7,103.28
  4. Step 4: Simplify right side
    13,071.22x = 128,132,944.17
  5. Step 5: Solve for x
    x = 128,132,944.17/13,071.22
  6. Step 6: Final answer
    x = 9,802.67

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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.