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Finding the Fourth Proportional to 14,390.29, 21,588.53 and 8,153.29

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Solution

The fourth proportional to 14,390.29, 21,588.53 and 8,153.29 is: 12,231.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,390.29 : 21,588.53 = 8,153.29 : x
  2. Step 2: Convert to fraction form
    14,390.29/21,588.53 = 8,153.29/x
  3. Step 3: Cross multiply
    14,390.29x = 21,588.53 × 8,153.29
  4. Step 4: Simplify right side
    14,390.29x = 176,017,545.76
  5. Step 5: Solve for x
    x = 176,017,545.76/14,390.29
  6. Step 6: Final answer
    x = 12,231.69

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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.