Home / 20,570.05-30,866.24-8,730.48

Finding the Fourth Proportional to 20,570.05, 30,866.24 and 8,730.48

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Solution

The fourth proportional to 20,570.05, 30,866.24 and 8,730.48 is: 13,100.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,570.05 : 30,866.24 = 8,730.48 : x
  2. Step 2: Convert to fraction form
    20,570.05/30,866.24 = 8,730.48/x
  3. Step 3: Cross multiply
    20,570.05x = 30,866.24 × 8,730.48
  4. Step 4: Simplify right side
    20,570.05x = 269,477,047.34
  5. Step 5: Solve for x
    x = 269,477,047.34/20,570.05
  6. Step 6: Final answer
    x = 13,100.46

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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.