Home / 18,405.30-25,399.95-10,447.26

Finding the Fourth Proportional to 18,405.30, 25,399.95 and 10,447.26

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Solution

The fourth proportional to 18,405.30, 25,399.95 and 10,447.26 is: 14,417.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,405.30 : 25,399.95 = 10,447.26 : x
  2. Step 2: Convert to fraction form
    18,405.30/25,399.95 = 10,447.26/x
  3. Step 3: Cross multiply
    18,405.30x = 25,399.95 × 10,447.26
  4. Step 4: Simplify right side
    18,405.30x = 265,359,881.64
  5. Step 5: Solve for x
    x = 265,359,881.64/18,405.30
  6. Step 6: Final answer
    x = 14,417.58

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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.