Home / 13,429.06-18,534.45-12,838.66

Finding the Fourth Proportional to 13,429.06, 18,534.45 and 12,838.66

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Solution

The fourth proportional to 13,429.06, 18,534.45 and 12,838.66 is: 17,719.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,429.06 : 18,534.45 = 12,838.66 : x
  2. Step 2: Convert to fraction form
    13,429.06/18,534.45 = 12,838.66/x
  3. Step 3: Cross multiply
    13,429.06x = 18,534.45 × 12,838.66
  4. Step 4: Simplify right side
    13,429.06x = 237,957,501.84
  5. Step 5: Solve for x
    x = 237,957,501.84/13,429.06
  6. Step 6: Final answer
    x = 17,719.59

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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.