Home / 21,633.09-32,258.68-20,862.16

Finding the Fourth Proportional to 21,633.09, 32,258.68 and 20,862.16

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Solution

The fourth proportional to 21,633.09, 32,258.68 and 20,862.16 is: 31,109.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,633.09 : 32,258.68 = 20,862.16 : x
  2. Step 2: Convert to fraction form
    21,633.09/32,258.68 = 20,862.16/x
  3. Step 3: Cross multiply
    21,633.09x = 32,258.68 × 20,862.16
  4. Step 4: Simplify right side
    21,633.09x = 672,985,743.55
  5. Step 5: Solve for x
    x = 672,985,743.55/21,633.09
  6. Step 6: Final answer
    x = 31,109.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.