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Finding the Fourth Proportional to 18,751.40, 28,089.48 and 8,900.24

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Solution

The fourth proportional to 18,751.40, 28,089.48 and 8,900.24 is: 13,332.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,751.40 : 28,089.48 = 8,900.24 : x
  2. Step 2: Convert to fraction form
    18,751.40/28,089.48 = 8,900.24/x
  3. Step 3: Cross multiply
    18,751.40x = 28,089.48 × 8,900.24
  4. Step 4: Simplify right side
    18,751.40x = 250,003,113.48
  5. Step 5: Solve for x
    x = 250,003,113.48/18,751.40
  6. Step 6: Final answer
    x = 13,332.50

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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.