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Finding the Fourth Proportional to 15,060.77, 20,783.97 and 8,346.50

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Solution

The fourth proportional to 15,060.77, 20,783.97 and 8,346.50 is: 11,518.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,060.77 : 20,783.97 = 8,346.50 : x
  2. Step 2: Convert to fraction form
    15,060.77/20,783.97 = 8,346.50/x
  3. Step 3: Cross multiply
    15,060.77x = 20,783.97 × 8,346.50
  4. Step 4: Simplify right side
    15,060.77x = 173,473,405.61
  5. Step 5: Solve for x
    x = 173,473,405.61/15,060.77
  6. Step 6: Final answer
    x = 11,518.23

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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.