Home / 21,173.55-29,206.62-12,670.98

Finding the Fourth Proportional to 21,173.55, 29,206.62 and 12,670.98

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Solution

The fourth proportional to 21,173.55, 29,206.62 and 12,670.98 is: 17,478.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,173.55 : 29,206.62 = 12,670.98 : x
  2. Step 2: Convert to fraction form
    21,173.55/29,206.62 = 12,670.98/x
  3. Step 3: Cross multiply
    21,173.55x = 29,206.62 × 12,670.98
  4. Step 4: Simplify right side
    21,173.55x = 370,076,497.89
  5. Step 5: Solve for x
    x = 370,076,497.89/21,173.55
  6. Step 6: Final answer
    x = 17,478.25

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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.