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Finding the Fourth Proportional to 14,379.66, 21,569.49 and 8,547.66

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Solution

The fourth proportional to 14,379.66, 21,569.49 and 8,547.66 is: 12,821.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,379.66 : 21,569.49 = 8,547.66 : x
  2. Step 2: Convert to fraction form
    14,379.66/21,569.49 = 8,547.66/x
  3. Step 3: Cross multiply
    14,379.66x = 21,569.49 × 8,547.66
  4. Step 4: Simplify right side
    14,379.66x = 184,368,666.89
  5. Step 5: Solve for x
    x = 184,368,666.89/14,379.66
  6. Step 6: Final answer
    x = 12,821.49

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Similar ratio
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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.