Home / 21,765.40-30,050.68-16,720.60

Finding the Fourth Proportional to 21,765.40, 30,050.68 and 16,720.60

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Solution

The fourth proportional to 21,765.40, 30,050.68 and 16,720.60 is: 23,085.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,765.40 : 30,050.68 = 16,720.60 : x
  2. Step 2: Convert to fraction form
    21,765.40/30,050.68 = 16,720.60/x
  3. Step 3: Cross multiply
    21,765.40x = 30,050.68 × 16,720.60
  4. Step 4: Simplify right side
    21,765.40x = 502,465,400.01
  5. Step 5: Solve for x
    x = 502,465,400.01/21,765.40
  6. Step 6: Final answer
    x = 23,085.51

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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.