Home / 20,740.48-28,622.16-11,309.52

Finding the Fourth Proportional to 20,740.48, 28,622.16 and 11,309.52

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Solution

The fourth proportional to 20,740.48, 28,622.16 and 11,309.52 is: 15,607.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,740.48 : 28,622.16 = 11,309.52 : x
  2. Step 2: Convert to fraction form
    20,740.48/28,622.16 = 11,309.52/x
  3. Step 3: Cross multiply
    20,740.48x = 28,622.16 × 11,309.52
  4. Step 4: Simplify right side
    20,740.48x = 323,702,890.96
  5. Step 5: Solve for x
    x = 323,702,890.96/20,740.48
  6. Step 6: Final answer
    x = 15,607.30

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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.