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Finding the Fourth Proportional to 15,030.00, 20,740.09 and 8,315.52

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Solution

The fourth proportional to 15,030.00, 20,740.09 and 8,315.52 is: 11,474.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,030.00 : 20,740.09 = 8,315.52 : x
  2. Step 2: Convert to fraction form
    15,030.00/20,740.09 = 8,315.52/x
  3. Step 3: Cross multiply
    15,030.00x = 20,740.09 × 8,315.52
  4. Step 4: Simplify right side
    15,030.00x = 172,464,487.92
  5. Step 5: Solve for x
    x = 172,464,487.92/15,030.00
  6. Step 6: Final answer
    x = 11,474.69

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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.