Home / 20,436.08-30,656.52-7,290.32

Finding the Fourth Proportional to 20,436.08, 30,656.52 and 7,290.32

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Solution

The fourth proportional to 20,436.08, 30,656.52 and 7,290.32 is: 10,936.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,436.08 : 30,656.52 = 7,290.32 : x
  2. Step 2: Convert to fraction form
    20,436.08/30,656.52 = 7,290.32/x
  3. Step 3: Cross multiply
    20,436.08x = 30,656.52 × 7,290.32
  4. Step 4: Simplify right side
    20,436.08x = 223,495,840.89
  5. Step 5: Solve for x
    x = 223,495,840.89/20,436.08
  6. Step 6: Final answer
    x = 10,936.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.