Home / 13,160.20-19,740.30-7,328.20

Finding the Fourth Proportional to 13,160.20, 19,740.30 and 7,328.20

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Solution

The fourth proportional to 13,160.20, 19,740.30 and 7,328.20 is: 10,992.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,160.20 : 19,740.30 = 7,328.20 : x
  2. Step 2: Convert to fraction form
    13,160.20/19,740.30 = 7,328.20/x
  3. Step 3: Cross multiply
    13,160.20x = 19,740.30 × 7,328.20
  4. Step 4: Simplify right side
    13,160.20x = 144,660,866.46
  5. Step 5: Solve for x
    x = 144,660,866.46/13,160.20
  6. Step 6: Final answer
    x = 10,992.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.