Home / 13,110.16-19,588.58-12,650.88

Finding the Fourth Proportional to 13,110.16, 19,588.58 and 12,650.88

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Solution

The fourth proportional to 13,110.16, 19,588.58 and 12,650.88 is: 18,902.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,110.16 : 19,588.58 = 12,650.88 : x
  2. Step 2: Convert to fraction form
    13,110.16/19,588.58 = 12,650.88/x
  3. Step 3: Cross multiply
    13,110.16x = 19,588.58 × 12,650.88
  4. Step 4: Simplify right side
    13,110.16x = 247,812,774.95
  5. Step 5: Solve for x
    x = 247,812,774.95/13,110.16
  6. Step 6: Final answer
    x = 18,902.35

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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.