Home / 31,457.10-47,207.49-20,336.20

Finding the Fourth Proportional to 31,457.10, 47,207.49 and 20,336.20

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Solution

The fourth proportional to 31,457.10, 47,207.49 and 20,336.20 is: 30,518.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,457.10 : 47,207.49 = 20,336.20 : x
  2. Step 2: Convert to fraction form
    31,457.10/47,207.49 = 20,336.20/x
  3. Step 3: Cross multiply
    31,457.10x = 47,207.49 × 20,336.20
  4. Step 4: Simplify right side
    31,457.10x = 960,020,958.14
  5. Step 5: Solve for x
    x = 960,020,958.14/31,457.10
  6. Step 6: Final answer
    x = 30,518.42

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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.