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Finding the Fourth Proportional to 19,041.76, 28,546.80 and 13,209.76

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Solution

The fourth proportional to 19,041.76, 28,546.80 and 13,209.76 is: 19,803.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,041.76 : 28,546.80 = 13,209.76 : x
  2. Step 2: Convert to fraction form
    19,041.76/28,546.80 = 13,209.76/x
  3. Step 3: Cross multiply
    19,041.76x = 28,546.80 × 13,209.76
  4. Step 4: Simplify right side
    19,041.76x = 377,096,376.77
  5. Step 5: Solve for x
    x = 377,096,376.77/19,041.76
  6. Step 6: Final answer
    x = 19,803.65

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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.