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Finding the Fourth Proportional to 28,500.19, 42,751.02 and 13,503.79

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Solution

The fourth proportional to 28,500.19, 42,751.02 and 13,503.79 is: 20,256.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,500.19 : 42,751.02 = 13,503.79 : x
  2. Step 2: Convert to fraction form
    28,500.19/42,751.02 = 13,503.79/x
  3. Step 3: Cross multiply
    28,500.19x = 42,751.02 × 13,503.79
  4. Step 4: Simplify right side
    28,500.19x = 577,300,515.09
  5. Step 5: Solve for x
    x = 577,300,515.09/28,500.19
  6. Step 6: Final answer
    x = 20,256.03

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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.