Home / 31,457.79-47,233.14-20,992.99

Finding the Fourth Proportional to 31,457.79, 47,233.14 and 20,992.99

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Solution

The fourth proportional to 31,457.79, 47,233.14 and 20,992.99 is: 31,520.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,457.79 : 47,233.14 = 20,992.99 : x
  2. Step 2: Convert to fraction form
    31,457.79/47,233.14 = 20,992.99/x
  3. Step 3: Cross multiply
    31,457.79x = 47,233.14 × 20,992.99
  4. Step 4: Simplify right side
    31,457.79x = 991,564,835.69
  5. Step 5: Solve for x
    x = 991,564,835.69/31,457.79
  6. Step 6: Final answer
    x = 31,520.49

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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.