Home / 21,132.32-29,157.98-12,633.17

Finding the Fourth Proportional to 21,132.32, 29,157.98 and 12,633.17

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Solution

The fourth proportional to 21,132.32, 29,157.98 and 12,633.17 is: 17,431.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,132.32 : 29,157.98 = 12,633.17 : x
  2. Step 2: Convert to fraction form
    21,132.32/29,157.98 = 12,633.17/x
  3. Step 3: Cross multiply
    21,132.32x = 29,157.98 × 12,633.17
  4. Step 4: Simplify right side
    21,132.32x = 368,357,509.24
  5. Step 5: Solve for x
    x = 368,357,509.24/21,132.32
  6. Step 6: Final answer
    x = 17,431.01

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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.