Home / 16,690.50-23,009.16-11,378.52

Finding the Fourth Proportional to 16,690.50, 23,009.16 and 11,378.52

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Solution

The fourth proportional to 16,690.50, 23,009.16 and 11,378.52 is: 15,686.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,690.50 : 23,009.16 = 11,378.52 : x
  2. Step 2: Convert to fraction form
    16,690.50/23,009.16 = 11,378.52/x
  3. Step 3: Cross multiply
    16,690.50x = 23,009.16 × 11,378.52
  4. Step 4: Simplify right side
    16,690.50x = 261,810,187.24
  5. Step 5: Solve for x
    x = 261,810,187.24/16,690.50
  6. Step 6: Final answer
    x = 15,686.18

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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.