Home / 13,071.61-18,039.09-7,103.67

Finding the Fourth Proportional to 13,071.61, 18,039.09 and 7,103.67

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Solution

The fourth proportional to 13,071.61, 18,039.09 and 7,103.67 is: 9,803.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,071.61 : 18,039.09 = 7,103.67 : x
  2. Step 2: Convert to fraction form
    13,071.61/18,039.09 = 7,103.67/x
  3. Step 3: Cross multiply
    13,071.61x = 18,039.09 × 7,103.67
  4. Step 4: Simplify right side
    13,071.61x = 128,143,742.46
  5. Step 5: Solve for x
    x = 128,143,742.46/13,071.61
  6. Step 6: Final answer
    x = 9,803.21

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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.