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Finding the Fourth Proportional to 14,888.34, 20,545.94 and 8,174.40

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Solution

The fourth proportional to 14,888.34, 20,545.94 and 8,174.40 is: 11,280.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,888.34 : 20,545.94 = 8,174.40 : x
  2. Step 2: Convert to fraction form
    14,888.34/20,545.94 = 8,174.40/x
  3. Step 3: Cross multiply
    14,888.34x = 20,545.94 × 8,174.40
  4. Step 4: Simplify right side
    14,888.34x = 167,950,675.32
  5. Step 5: Solve for x
    x = 167,950,675.32/14,888.34
  6. Step 6: Final answer
    x = 11,280.69

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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.