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Finding the Fourth Proportional to 14,038.51, 21,049.92 and 5,708.78

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Solution

The fourth proportional to 14,038.51, 21,049.92 and 5,708.78 is: 8,559.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,038.51 : 21,049.92 = 5,708.78 : x
  2. Step 2: Convert to fraction form
    14,038.51/21,049.92 = 5,708.78/x
  3. Step 3: Cross multiply
    14,038.51x = 21,049.92 × 5,708.78
  4. Step 4: Simplify right side
    14,038.51x = 120,169,228.50
  5. Step 5: Solve for x
    x = 120,169,228.50/14,038.51
  6. Step 6: Final answer
    x = 8,559.97

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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.