Home / 18,465.12-25,489.80-12,798.72

Finding the Fourth Proportional to 18,465.12, 25,489.80 and 12,798.72

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Solution

The fourth proportional to 18,465.12, 25,489.80 and 12,798.72 is: 17,667.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,465.12 : 25,489.80 = 12,798.72 : x
  2. Step 2: Convert to fraction form
    18,465.12/25,489.80 = 12,798.72/x
  3. Step 3: Cross multiply
    18,465.12x = 25,489.80 × 12,798.72
  4. Step 4: Simplify right side
    18,465.12x = 326,236,813.06
  5. Step 5: Solve for x
    x = 326,236,813.06/18,465.12
  6. Step 6: Final answer
    x = 17,667.73

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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.