Home / 28,030.12-38,684.32-20,944.24

Finding the Fourth Proportional to 28,030.12, 38,684.32 and 20,944.24

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Solution

The fourth proportional to 28,030.12, 38,684.32 and 20,944.24 is: 28,905.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,030.12 : 38,684.32 = 20,944.24 : x
  2. Step 2: Convert to fraction form
    28,030.12/38,684.32 = 20,944.24/x
  3. Step 3: Cross multiply
    28,030.12x = 38,684.32 × 20,944.24
  4. Step 4: Simplify right side
    28,030.12x = 810,213,533.25
  5. Step 5: Solve for x
    x = 810,213,533.25/28,030.12
  6. Step 6: Final answer
    x = 28,905.11

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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.