Home / 11,820.30-17,730.45-9,706.20

Finding the Fourth Proportional to 11,820.30, 17,730.45 and 9,706.20

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Solution

The fourth proportional to 11,820.30, 17,730.45 and 9,706.20 is: 14,559.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,820.30 : 17,730.45 = 9,706.20 : x
  2. Step 2: Convert to fraction form
    11,820.30/17,730.45 = 9,706.20/x
  3. Step 3: Cross multiply
    11,820.30x = 17,730.45 × 9,706.20
  4. Step 4: Simplify right side
    11,820.30x = 172,095,293.79
  5. Step 5: Solve for x
    x = 172,095,293.79/11,820.30
  6. Step 6: Final answer
    x = 14,559.30

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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.