Home / 20,457.20-30,685.80-11,281.52

Finding the Fourth Proportional to 20,457.20, 30,685.80 and 11,281.52

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Solution

The fourth proportional to 20,457.20, 30,685.80 and 11,281.52 is: 16,922.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,457.20 : 30,685.80 = 11,281.52 : x
  2. Step 2: Convert to fraction form
    20,457.20/30,685.80 = 11,281.52/x
  3. Step 3: Cross multiply
    20,457.20x = 30,685.80 × 11,281.52
  4. Step 4: Simplify right side
    20,457.20x = 346,182,466.42
  5. Step 5: Solve for x
    x = 346,182,466.42/20,457.20
  6. Step 6: Final answer
    x = 16,922.28

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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.