Home / 19,108.10-28,620.60-11,690.12

Finding the Fourth Proportional to 19,108.10, 28,620.60 and 11,690.12

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Solution

The fourth proportional to 19,108.10, 28,620.60 and 11,690.12 is: 17,509.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,108.10 : 28,620.60 = 11,690.12 : x
  2. Step 2: Convert to fraction form
    19,108.10/28,620.60 = 11,690.12/x
  3. Step 3: Cross multiply
    19,108.10x = 28,620.60 × 11,690.12
  4. Step 4: Simplify right side
    19,108.10x = 334,578,248.47
  5. Step 5: Solve for x
    x = 334,578,248.47/19,108.10
  6. Step 6: Final answer
    x = 17,509.76

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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.