Home / 20,289.93-28,000.25-11,337.81

Finding the Fourth Proportional to 20,289.93, 28,000.25 and 11,337.81

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Solution

The fourth proportional to 20,289.93, 28,000.25 and 11,337.81 is: 15,646.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,289.93 : 28,000.25 = 11,337.81 : x
  2. Step 2: Convert to fraction form
    20,289.93/28,000.25 = 11,337.81/x
  3. Step 3: Cross multiply
    20,289.93x = 28,000.25 × 11,337.81
  4. Step 4: Simplify right side
    20,289.93x = 317,461,514.45
  5. Step 5: Solve for x
    x = 317,461,514.45/20,289.93
  6. Step 6: Final answer
    x = 15,646.26

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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.