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Finding the Fourth Proportional to 15,037.08, 20,751.02 and 8,990.10

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Solution

The fourth proportional to 15,037.08, 20,751.02 and 8,990.10 is: 12,406.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,037.08 : 20,751.02 = 8,990.10 : x
  2. Step 2: Convert to fraction form
    15,037.08/20,751.02 = 8,990.10/x
  3. Step 3: Cross multiply
    15,037.08x = 20,751.02 × 8,990.10
  4. Step 4: Simplify right side
    15,037.08x = 186,553,744.90
  5. Step 5: Solve for x
    x = 186,553,744.90/15,037.08
  6. Step 6: Final answer
    x = 12,406.25

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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.