Home / 20,736.01-28,616.28-12,670.98

Finding the Fourth Proportional to 20,736.01, 28,616.28 and 12,670.98

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Solution

The fourth proportional to 20,736.01, 28,616.28 and 12,670.98 is: 17,486.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,736.01 : 28,616.28 = 12,670.98 : x
  2. Step 2: Convert to fraction form
    20,736.01/28,616.28 = 12,670.98/x
  3. Step 3: Cross multiply
    20,736.01x = 28,616.28 × 12,670.98
  4. Step 4: Simplify right side
    20,736.01x = 362,596,311.55
  5. Step 5: Solve for x
    x = 362,596,311.55/20,736.01
  6. Step 6: Final answer
    x = 17,486.31

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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.