Home / 28,383.14-39,169.95-15,807.89

Finding the Fourth Proportional to 28,383.14, 39,169.95 and 15,807.89

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Solution

The fourth proportional to 28,383.14, 39,169.95 and 15,807.89 is: 21,815.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,383.14 : 39,169.95 = 15,807.89 : x
  2. Step 2: Convert to fraction form
    28,383.14/39,169.95 = 15,807.89/x
  3. Step 3: Cross multiply
    28,383.14x = 39,169.95 × 15,807.89
  4. Step 4: Simplify right side
    28,383.14x = 619,194,358.83
  5. Step 5: Solve for x
    x = 619,194,358.83/28,383.14
  6. Step 6: Final answer
    x = 21,815.57

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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.