Home / 30,143.69-45,217.59-10,423.79

Finding the Fourth Proportional to 30,143.69, 45,217.59 and 10,423.79

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Solution

The fourth proportional to 30,143.69, 45,217.59 and 10,423.79 is: 15,636.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,143.69 : 45,217.59 = 10,423.79 : x
  2. Step 2: Convert to fraction form
    30,143.69/45,217.59 = 10,423.79/x
  3. Step 3: Cross multiply
    30,143.69x = 45,217.59 × 10,423.79
  4. Step 4: Simplify right side
    30,143.69x = 471,338,625.49
  5. Step 5: Solve for x
    x = 471,338,625.49/30,143.69
  6. Step 6: Final answer
    x = 15,636.39

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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.