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Finding the Fourth Proportional to 28,532, 39,374.30 and 15,956.76

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Solution

The fourth proportional to 28,532, 39,374.30 and 15,956.76 is: 22,020.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,532 : 39,374.30 = 15,956.76 : x
  2. Step 2: Convert to fraction form
    28,532/39,374.30 = 15,956.76/x
  3. Step 3: Cross multiply
    28,532x = 39,374.30 × 15,956.76
  4. Step 4: Simplify right side
    28,532x = 628,286,255.27
  5. Step 5: Solve for x
    x = 628,286,255.27/28,532
  6. Step 6: Final answer
    x = 22,020.41

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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.