Home / 20,584.74-28,407.04-11,153.32

Finding the Fourth Proportional to 20,584.74, 28,407.04 and 11,153.32

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Solution

The fourth proportional to 20,584.74, 28,407.04 and 11,153.32 is: 15,391.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,584.74 : 28,407.04 = 11,153.32 : x
  2. Step 2: Convert to fraction form
    20,584.74/28,407.04 = 11,153.32/x
  3. Step 3: Cross multiply
    20,584.74x = 28,407.04 × 11,153.32
  4. Step 4: Simplify right side
    20,584.74x = 316,832,807.37
  5. Step 5: Solve for x
    x = 316,832,807.37/20,584.74
  6. Step 6: Final answer
    x = 15,391.64

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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.