Home / 34,613.36-51,920.76-12,428.72

Finding the Fourth Proportional to 34,613.36, 51,920.76 and 12,428.72

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Solution

The fourth proportional to 34,613.36, 51,920.76 and 12,428.72 is: 18,643.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,613.36 : 51,920.76 = 12,428.72 : x
  2. Step 2: Convert to fraction form
    34,613.36/51,920.76 = 12,428.72/x
  3. Step 3: Cross multiply
    34,613.36x = 51,920.76 × 12,428.72
  4. Step 4: Simplify right side
    34,613.36x = 645,308,588.23
  5. Step 5: Solve for x
    x = 645,308,588.23/34,613.36
  6. Step 6: Final answer
    x = 18,643.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.