Home / 15,261.64-20,997.48-13,461.28

Finding the Fourth Proportional to 15,261.64, 20,997.48 and 13,461.28

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Solution

The fourth proportional to 15,261.64, 20,997.48 and 13,461.28 is: 18,520.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,261.64 : 20,997.48 = 13,461.28 : x
  2. Step 2: Convert to fraction form
    15,261.64/20,997.48 = 13,461.28/x
  3. Step 3: Cross multiply
    15,261.64x = 20,997.48 × 13,461.28
  4. Step 4: Simplify right side
    15,261.64x = 282,652,957.57
  5. Step 5: Solve for x
    x = 282,652,957.57/15,261.64
  6. Step 6: Final answer
    x = 18,520.48

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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.