Home / 18,373.37-25,359.75-10,420.25

Finding the Fourth Proportional to 18,373.37, 25,359.75 and 10,420.25

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Solution

The fourth proportional to 18,373.37, 25,359.75 and 10,420.25 is: 14,382.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,373.37 : 25,359.75 = 10,420.25 : x
  2. Step 2: Convert to fraction form
    18,373.37/25,359.75 = 10,420.25/x
  3. Step 3: Cross multiply
    18,373.37x = 25,359.75 × 10,420.25
  4. Step 4: Simplify right side
    18,373.37x = 264,254,808.14
  5. Step 5: Solve for x
    x = 264,254,808.14/18,373.37
  6. Step 6: Final answer
    x = 14,382.49

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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.