Home / 13,420.37-20,130.75-4,655.49

Finding the Fourth Proportional to 13,420.37, 20,130.75 and 4,655.49

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Solution

The fourth proportional to 13,420.37, 20,130.75 and 4,655.49 is: 6,983.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,420.37 : 20,130.75 = 4,655.49 : x
  2. Step 2: Convert to fraction form
    13,420.37/20,130.75 = 4,655.49/x
  3. Step 3: Cross multiply
    13,420.37x = 20,130.75 × 4,655.49
  4. Step 4: Simplify right side
    13,420.37x = 93,718,505.32
  5. Step 5: Solve for x
    x = 93,718,505.32/13,420.37
  6. Step 6: Final answer
    x = 6,983.31

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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.