Home / 30,423.24-42,012.80-28,766.58

Finding the Fourth Proportional to 30,423.24, 42,012.80 and 28,766.58

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Solution

The fourth proportional to 30,423.24, 42,012.80 and 28,766.58 is: 39,725.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,423.24 : 42,012.80 = 28,766.58 : x
  2. Step 2: Convert to fraction form
    30,423.24/42,012.80 = 28,766.58/x
  3. Step 3: Cross multiply
    30,423.24x = 42,012.80 × 28,766.58
  4. Step 4: Simplify right side
    30,423.24x = 1,208,564,572.22
  5. Step 5: Solve for x
    x = 1,208,564,572.22/30,423.24
  6. Step 6: Final answer
    x = 39,725.04

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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.