Home / 19,145.42-26,425.88-12,430.68

Finding the Fourth Proportional to 19,145.42, 26,425.88 and 12,430.68

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Solution

The fourth proportional to 19,145.42, 26,425.88 and 12,430.68 is: 17,157.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,145.42 : 26,425.88 = 12,430.68 : x
  2. Step 2: Convert to fraction form
    19,145.42/26,425.88 = 12,430.68/x
  3. Step 3: Cross multiply
    19,145.42x = 26,425.88 × 12,430.68
  4. Step 4: Simplify right side
    19,145.42x = 328,491,658.00
  5. Step 5: Solve for x
    x = 328,491,658.00/19,145.42
  6. Step 6: Final answer
    x = 17,157.71

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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.