Home / 13,153.54-19,701.06-12,129.16

Finding the Fourth Proportional to 13,153.54, 19,701.06 and 12,129.16

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Solution

The fourth proportional to 13,153.54, 19,701.06 and 12,129.16 is: 18,166.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,153.54 : 19,701.06 = 12,129.16 : x
  2. Step 2: Convert to fraction form
    13,153.54/19,701.06 = 12,129.16/x
  3. Step 3: Cross multiply
    13,153.54x = 19,701.06 × 12,129.16
  4. Step 4: Simplify right side
    13,153.54x = 238,957,308.91
  5. Step 5: Solve for x
    x = 238,957,308.91/13,153.54
  6. Step 6: Final answer
    x = 18,166.77

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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.