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Finding the Fourth Proportional to 14,152.59, 21,231.59 and 5,386.77

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Solution

The fourth proportional to 14,152.59, 21,231.59 and 5,386.77 is: 8,081.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,152.59 : 21,231.59 = 5,386.77 : x
  2. Step 2: Convert to fraction form
    14,152.59/21,231.59 = 5,386.77/x
  3. Step 3: Cross multiply
    14,152.59x = 21,231.59 × 5,386.77
  4. Step 4: Simplify right side
    14,152.59x = 114,369,665.13
  5. Step 5: Solve for x
    x = 114,369,665.13/14,152.59
  6. Step 6: Final answer
    x = 8,081.18

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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.