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Finding the Fourth Proportional to 13,131, 19,565.19 and 12,124.98

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Solution

The fourth proportional to 13,131, 19,565.19 and 12,124.98 is: 18,066.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,131 : 19,565.19 = 12,124.98 : x
  2. Step 2: Convert to fraction form
    13,131/19,565.19 = 12,124.98/x
  3. Step 3: Cross multiply
    13,131x = 19,565.19 × 12,124.98
  4. Step 4: Simplify right side
    13,131x = 237,227,537.45
  5. Step 5: Solve for x
    x = 237,227,537.45/13,131
  6. Step 6: Final answer
    x = 18,066.22

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Double scale
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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.