Home / 21,457.36-32,235.48-20,571.64

Finding the Fourth Proportional to 21,457.36, 32,235.48 and 20,571.64

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Solution

The fourth proportional to 21,457.36, 32,235.48 and 20,571.64 is: 30,904.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,457.36 : 32,235.48 = 20,571.64 : x
  2. Step 2: Convert to fraction form
    21,457.36/32,235.48 = 20,571.64/x
  3. Step 3: Cross multiply
    21,457.36x = 32,235.48 × 20,571.64
  4. Step 4: Simplify right side
    21,457.36x = 663,136,689.79
  5. Step 5: Solve for x
    x = 663,136,689.79/21,457.36
  6. Step 6: Final answer
    x = 30,904.86

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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.