Home / 13,148.84-18,145.22-7,180.67

Finding the Fourth Proportional to 13,148.84, 18,145.22 and 7,180.67

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Solution

The fourth proportional to 13,148.84, 18,145.22 and 7,180.67 is: 9,909.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,148.84 : 18,145.22 = 7,180.67 : x
  2. Step 2: Convert to fraction form
    13,148.84/18,145.22 = 7,180.67/x
  3. Step 3: Cross multiply
    13,148.84x = 18,145.22 × 7,180.67
  4. Step 4: Simplify right side
    13,148.84x = 130,294,710.27
  5. Step 5: Solve for x
    x = 130,294,710.27/13,148.84
  6. Step 6: Final answer
    x = 9,909.22

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Double scale
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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.