Home / 13,363.48-20,057.40-7,128.76

Finding the Fourth Proportional to 13,363.48, 20,057.40 and 7,128.76

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Solution

The fourth proportional to 13,363.48, 20,057.40 and 7,128.76 is: 10,699.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,363.48 : 20,057.40 = 7,128.76 : x
  2. Step 2: Convert to fraction form
    13,363.48/20,057.40 = 7,128.76/x
  3. Step 3: Cross multiply
    13,363.48x = 20,057.40 × 7,128.76
  4. Step 4: Simplify right side
    13,363.48x = 142,984,390.82
  5. Step 5: Solve for x
    x = 142,984,390.82/13,363.48
  6. Step 6: Final answer
    x = 10,699.64

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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.