Home / 20,735.51-28,615.59-12,670.48

Finding the Fourth Proportional to 20,735.51, 28,615.59 and 12,670.48

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Solution

The fourth proportional to 20,735.51, 28,615.59 and 12,670.48 is: 17,485.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,735.51 : 28,615.59 = 12,670.48 : x
  2. Step 2: Convert to fraction form
    20,735.51/28,615.59 = 12,670.48/x
  3. Step 3: Cross multiply
    20,735.51x = 28,615.59 × 12,670.48
  4. Step 4: Simplify right side
    20,735.51x = 362,573,260.78
  5. Step 5: Solve for x
    x = 362,573,260.78/20,735.51
  6. Step 6: Final answer
    x = 17,485.62

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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.