Home / 39,457.68-54,452.78-21,553.64

Finding the Fourth Proportional to 39,457.68, 54,452.78 and 21,553.64

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Solution

The fourth proportional to 39,457.68, 54,452.78 and 21,553.64 is: 29,744.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,457.68 : 54,452.78 = 21,553.64 : x
  2. Step 2: Convert to fraction form
    39,457.68/54,452.78 = 21,553.64/x
  3. Step 3: Cross multiply
    39,457.68x = 54,452.78 × 21,553.64
  4. Step 4: Simplify right side
    39,457.68x = 1,173,655,617.12
  5. Step 5: Solve for x
    x = 1,173,655,617.12/39,457.68
  6. Step 6: Final answer
    x = 29,744.67

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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.