Home / 13,330.64-20,001.72-7,178.96

Finding the Fourth Proportional to 13,330.64, 20,001.72 and 7,178.96

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Solution

The fourth proportional to 13,330.64, 20,001.72 and 7,178.96 is: 10,771.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,330.64 : 20,001.72 = 7,178.96 : x
  2. Step 2: Convert to fraction form
    13,330.64/20,001.72 = 7,178.96/x
  3. Step 3: Cross multiply
    13,330.64x = 20,001.72 × 7,178.96
  4. Step 4: Simplify right side
    13,330.64x = 143,591,547.81
  5. Step 5: Solve for x
    x = 143,591,547.81/13,330.64
  6. Step 6: Final answer
    x = 10,771.54

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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.