Home / 20,445.60-30,667.68-5,656.08

Finding the Fourth Proportional to 20,445.60, 30,667.68 and 5,656.08

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Solution

The fourth proportional to 20,445.60, 30,667.68 and 5,656.08 is: 8,483.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,445.60 : 30,667.68 = 5,656.08 : x
  2. Step 2: Convert to fraction form
    20,445.60/30,667.68 = 5,656.08/x
  3. Step 3: Cross multiply
    20,445.60x = 30,667.68 × 5,656.08
  4. Step 4: Simplify right side
    20,445.60x = 173,458,851.49
  5. Step 5: Solve for x
    x = 173,458,851.49/20,445.60
  6. Step 6: Final answer
    x = 8,483.92

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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.