Home / 28,318.80-42,483.30-11,669.73

Finding the Fourth Proportional to 28,318.80, 42,483.30 and 11,669.73

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Solution

The fourth proportional to 28,318.80, 42,483.30 and 11,669.73 is: 17,506.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,318.80 : 42,483.30 = 11,669.73 : x
  2. Step 2: Convert to fraction form
    28,318.80/42,483.30 = 11,669.73/x
  3. Step 3: Cross multiply
    28,318.80x = 42,483.30 × 11,669.73
  4. Step 4: Simplify right side
    28,318.80x = 495,768,640.51
  5. Step 5: Solve for x
    x = 495,768,640.51/28,318.80
  6. Step 6: Final answer
    x = 17,506.70

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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.