Home / 13,108.16-19,585.60-12,648.88

Finding the Fourth Proportional to 13,108.16, 19,585.60 and 12,648.88

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Solution

The fourth proportional to 13,108.16, 19,585.60 and 12,648.88 is: 18,899.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,108.16 : 19,585.60 = 12,648.88 : x
  2. Step 2: Convert to fraction form
    13,108.16/19,585.60 = 12,648.88/x
  3. Step 3: Cross multiply
    13,108.16x = 19,585.60 × 12,648.88
  4. Step 4: Simplify right side
    13,108.16x = 247,735,904.13
  5. Step 5: Solve for x
    x = 247,735,904.13/13,108.16
  6. Step 6: Final answer
    x = 18,899.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.