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Finding the Fourth Proportional to 15,036.96, 20,750.50 and 8,322.46

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Solution

The fourth proportional to 15,036.96, 20,750.50 and 8,322.46 is: 11,484.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,036.96 : 20,750.50 = 8,322.46 : x
  2. Step 2: Convert to fraction form
    15,036.96/20,750.50 = 8,322.46/x
  3. Step 3: Cross multiply
    15,036.96x = 20,750.50 × 8,322.46
  4. Step 4: Simplify right side
    15,036.96x = 172,695,206.23
  5. Step 5: Solve for x
    x = 172,695,206.23/15,036.96
  6. Step 6: Final answer
    x = 11,484.72

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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.