Home / 18,630.12-25,703.28-12,651.40

Finding the Fourth Proportional to 18,630.12, 25,703.28 and 12,651.40

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Solution

The fourth proportional to 18,630.12, 25,703.28 and 12,651.40 is: 17,454.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,630.12 : 25,703.28 = 12,651.40 : x
  2. Step 2: Convert to fraction form
    18,630.12/25,703.28 = 12,651.40/x
  3. Step 3: Cross multiply
    18,630.12x = 25,703.28 × 12,651.40
  4. Step 4: Simplify right side
    18,630.12x = 325,182,476.59
  5. Step 5: Solve for x
    x = 325,182,476.59/18,630.12
  6. Step 6: Final answer
    x = 17,454.66

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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.