Home / 28,532.30-39,373.83-15,785.15

Finding the Fourth Proportional to 28,532.30, 39,373.83 and 15,785.15

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Solution

The fourth proportional to 28,532.30, 39,373.83 and 15,785.15 is: 21,783.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,532.30 : 39,373.83 = 15,785.15 : x
  2. Step 2: Convert to fraction form
    28,532.30/39,373.83 = 15,785.15/x
  3. Step 3: Cross multiply
    28,532.30x = 39,373.83 × 15,785.15
  4. Step 4: Simplify right side
    28,532.30x = 621,521,615.76
  5. Step 5: Solve for x
    x = 621,521,615.76/28,532.30
  6. Step 6: Final answer
    x = 21,783.09

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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.