Home / 21,456.60-29,659.68-17,899.08

Finding the Fourth Proportional to 21,456.60, 29,659.68 and 17,899.08

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Solution

The fourth proportional to 21,456.60, 29,659.68 and 17,899.08 is: 24,742.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,456.60 : 29,659.68 = 17,899.08 : x
  2. Step 2: Convert to fraction form
    21,456.60/29,659.68 = 17,899.08/x
  3. Step 3: Cross multiply
    21,456.60x = 29,659.68 × 17,899.08
  4. Step 4: Simplify right side
    21,456.60x = 530,880,985.09
  5. Step 5: Solve for x
    x = 530,880,985.09/21,456.60
  6. Step 6: Final answer
    x = 24,742.08

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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.