Home / 21,659.32-29,889.63-12,705.11

Finding the Fourth Proportional to 21,659.32, 29,889.63 and 12,705.11

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Solution

The fourth proportional to 21,659.32, 29,889.63 and 12,705.11 is: 17,532.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,659.32 : 29,889.63 = 12,705.11 : x
  2. Step 2: Convert to fraction form
    21,659.32/29,889.63 = 12,705.11/x
  3. Step 3: Cross multiply
    21,659.32x = 29,889.63 × 12,705.11
  4. Step 4: Simplify right side
    21,659.32x = 379,751,037.01
  5. Step 5: Solve for x
    x = 379,751,037.01/21,659.32
  6. Step 6: Final answer
    x = 17,532.92

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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.