Home / 28,532.73-39,376.35-15,785.71

Finding the Fourth Proportional to 28,532.73, 39,376.35 and 15,785.71

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Solution

The fourth proportional to 28,532.73, 39,376.35 and 15,785.71 is: 21,784.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,532.73 : 39,376.35 = 15,785.71 : x
  2. Step 2: Convert to fraction form
    28,532.73/39,376.35 = 15,785.71/x
  3. Step 3: Cross multiply
    28,532.73x = 39,376.35 × 15,785.71
  4. Step 4: Simplify right side
    28,532.73x = 621,583,641.96
  5. Step 5: Solve for x
    x = 621,583,641.96/28,532.73
  6. Step 6: Final answer
    x = 21,784.93

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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.