Home / 30,423.69-42,013.45-28,767.04

Finding the Fourth Proportional to 30,423.69, 42,013.45 and 28,767.04

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Solution

The fourth proportional to 30,423.69, 42,013.45 and 28,767.04 is: 39,725.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,423.69 : 42,013.45 = 28,767.04 : x
  2. Step 2: Convert to fraction form
    30,423.69/42,013.45 = 28,767.04/x
  3. Step 3: Cross multiply
    30,423.69x = 42,013.45 × 28,767.04
  4. Step 4: Simplify right side
    30,423.69x = 1,208,602,596.69
  5. Step 5: Solve for x
    x = 1,208,602,596.69/30,423.69
  6. Step 6: Final answer
    x = 39,725.71

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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.