Home / 20,300.22-28,013.15-11,225.05

Finding the Fourth Proportional to 20,300.22, 28,013.15 and 11,225.05

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Solution

The fourth proportional to 20,300.22, 28,013.15 and 11,225.05 is: 15,489.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,300.22 : 28,013.15 = 11,225.05 : x
  2. Step 2: Convert to fraction form
    20,300.22/28,013.15 = 11,225.05/x
  3. Step 3: Cross multiply
    20,300.22x = 28,013.15 × 11,225.05
  4. Step 4: Simplify right side
    20,300.22x = 314,448,967.44
  5. Step 5: Solve for x
    x = 314,448,967.44/20,300.22
  6. Step 6: Final answer
    x = 15,489.93

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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.