Home / 21,617.04-29,832.34-12,185.40

Finding the Fourth Proportional to 21,617.04, 29,832.34 and 12,185.40

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Solution

The fourth proportional to 21,617.04, 29,832.34 and 12,185.40 is: 16,816.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,617.04 : 29,832.34 = 12,185.40 : x
  2. Step 2: Convert to fraction form
    21,617.04/29,832.34 = 12,185.40/x
  3. Step 3: Cross multiply
    21,617.04x = 29,832.34 × 12,185.40
  4. Step 4: Simplify right side
    21,617.04x = 363,518,995.84
  5. Step 5: Solve for x
    x = 363,518,995.84/21,617.04
  6. Step 6: Final answer
    x = 16,816.32

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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.