Home / 18,399.04-25,386.72-10,440.64

Finding the Fourth Proportional to 18,399.04, 25,386.72 and 10,440.64

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Solution

The fourth proportional to 18,399.04, 25,386.72 and 10,440.64 is: 14,405.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,399.04 : 25,386.72 = 10,440.64 : x
  2. Step 2: Convert to fraction form
    18,399.04/25,386.72 = 10,440.64/x
  3. Step 3: Cross multiply
    18,399.04x = 25,386.72 × 10,440.64
  4. Step 4: Simplify right side
    18,399.04x = 265,053,604.30
  5. Step 5: Solve for x
    x = 265,053,604.30/18,399.04
  6. Step 6: Final answer
    x = 14,405.84

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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.