Home / 14,328.18-19,781.91-11,681.82

Finding the Fourth Proportional to 14,328.18, 19,781.91 and 11,681.82

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Solution

The fourth proportional to 14,328.18, 19,781.91 and 11,681.82 is: 16,128.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,328.18 : 19,781.91 = 11,681.82 : x
  2. Step 2: Convert to fraction form
    14,328.18/19,781.91 = 11,681.82/x
  3. Step 3: Cross multiply
    14,328.18x = 19,781.91 × 11,681.82
  4. Step 4: Simplify right side
    14,328.18x = 231,088,711.88
  5. Step 5: Solve for x
    x = 231,088,711.88/14,328.18
  6. Step 6: Final answer
    x = 16,128.27

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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.