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Finding the Fourth Proportional to 15,309.16, 22,909.02 and 11,999.50

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Solution

The fourth proportional to 15,309.16, 22,909.02 and 11,999.50 is: 17,956.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,309.16 : 22,909.02 = 11,999.50 : x
  2. Step 2: Convert to fraction form
    15,309.16/22,909.02 = 11,999.50/x
  3. Step 3: Cross multiply
    15,309.16x = 22,909.02 × 11,999.50
  4. Step 4: Simplify right side
    15,309.16x = 274,896,785.49
  5. Step 5: Solve for x
    x = 274,896,785.49/15,309.16
  6. Step 6: Final answer
    x = 17,956.36

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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.