Home / 20,688.52-31,035.66-7,547.08

Finding the Fourth Proportional to 20,688.52, 31,035.66 and 7,547.08

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Solution

The fourth proportional to 20,688.52, 31,035.66 and 7,547.08 is: 11,321.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,688.52 : 31,035.66 = 7,547.08 : x
  2. Step 2: Convert to fraction form
    20,688.52/31,035.66 = 7,547.08/x
  3. Step 3: Cross multiply
    20,688.52x = 31,035.66 × 7,547.08
  4. Step 4: Simplify right side
    20,688.52x = 234,228,608.87
  5. Step 5: Solve for x
    x = 234,228,608.87/20,688.52
  6. Step 6: Final answer
    x = 11,321.67

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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.