Home / 18,458.20-25,465.08-11,372.32

Finding the Fourth Proportional to 18,458.20, 25,465.08 and 11,372.32

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Solution

The fourth proportional to 18,458.20, 25,465.08 and 11,372.32 is: 15,689.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,458.20 : 25,465.08 = 11,372.32 : x
  2. Step 2: Convert to fraction form
    18,458.20/25,465.08 = 11,372.32/x
  3. Step 3: Cross multiply
    18,458.20x = 25,465.08 × 11,372.32
  4. Step 4: Simplify right side
    18,458.20x = 289,597,038.59
  5. Step 5: Solve for x
    x = 289,597,038.59/18,458.20
  6. Step 6: Final answer
    x = 15,689.34

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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.