Home / 18,429.16-25,431.24-10,470.28

Finding the Fourth Proportional to 18,429.16, 25,431.24 and 10,470.28

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Solution

The fourth proportional to 18,429.16, 25,431.24 and 10,470.28 is: 14,448.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,429.16 : 25,431.24 = 10,470.28 : x
  2. Step 2: Convert to fraction form
    18,429.16/25,431.24 = 10,470.28/x
  3. Step 3: Cross multiply
    18,429.16x = 25,431.24 × 10,470.28
  4. Step 4: Simplify right side
    18,429.16x = 266,272,203.55
  5. Step 5: Solve for x
    x = 266,272,203.55/18,429.16
  6. Step 6: Final answer
    x = 14,448.42

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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.