Home / 20,313.36-28,024.56-12,756.48

Finding the Fourth Proportional to 20,313.36, 28,024.56 and 12,756.48

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Solution

The fourth proportional to 20,313.36, 28,024.56 and 12,756.48 is: 17,599.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,313.36 : 28,024.56 = 12,756.48 : x
  2. Step 2: Convert to fraction form
    20,313.36/28,024.56 = 12,756.48/x
  3. Step 3: Cross multiply
    20,313.36x = 28,024.56 × 12,756.48
  4. Step 4: Simplify right side
    20,313.36x = 357,494,739.15
  5. Step 5: Solve for x
    x = 357,494,739.15/20,313.36
  6. Step 6: Final answer
    x = 17,599.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.