Home / 20,683.04-28,542.30-11,251.40

Finding the Fourth Proportional to 20,683.04, 28,542.30 and 11,251.40

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Solution

The fourth proportional to 20,683.04, 28,542.30 and 11,251.40 is: 15,526.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,683.04 : 28,542.30 = 11,251.40 : x
  2. Step 2: Convert to fraction form
    20,683.04/28,542.30 = 11,251.40/x
  3. Step 3: Cross multiply
    20,683.04x = 28,542.30 × 11,251.40
  4. Step 4: Simplify right side
    20,683.04x = 321,140,834.22
  5. Step 5: Solve for x
    x = 321,140,834.22/20,683.04
  6. Step 6: Final answer
    x = 15,526.77

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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.