Home / 18,360.79-25,338.91-10,405.58

Finding the Fourth Proportional to 18,360.79, 25,338.91 and 10,405.58

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Solution

The fourth proportional to 18,360.79, 25,338.91 and 10,405.58 is: 14,360.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,360.79 : 25,338.91 = 10,405.58 : x
  2. Step 2: Convert to fraction form
    18,360.79/25,338.91 = 10,405.58/x
  3. Step 3: Cross multiply
    18,360.79x = 25,338.91 × 10,405.58
  4. Step 4: Simplify right side
    18,360.79x = 263,666,055.12
  5. Step 5: Solve for x
    x = 263,666,055.12/18,360.79
  6. Step 6: Final answer
    x = 14,360.28

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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.