Home / 21,638.36-32,457.30-11,775.40

Finding the Fourth Proportional to 21,638.36, 32,457.30 and 11,775.40

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Solution

The fourth proportional to 21,638.36, 32,457.30 and 11,775.40 is: 17,662.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,638.36 : 32,457.30 = 11,775.40 : x
  2. Step 2: Convert to fraction form
    21,638.36/32,457.30 = 11,775.40/x
  3. Step 3: Cross multiply
    21,638.36x = 32,457.30 × 11,775.40
  4. Step 4: Simplify right side
    21,638.36x = 382,197,690.42
  5. Step 5: Solve for x
    x = 382,197,690.42/21,638.36
  6. Step 6: Final answer
    x = 17,662.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.