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Finding the Fourth Proportional to 14,602.71, 20,151.72 and 8,315.09

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Solution

The fourth proportional to 14,602.71, 20,151.72 and 8,315.09 is: 11,474.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,602.71 : 20,151.72 = 8,315.09 : x
  2. Step 2: Convert to fraction form
    14,602.71/20,151.72 = 8,315.09/x
  3. Step 3: Cross multiply
    14,602.71x = 20,151.72 × 8,315.09
  4. Step 4: Simplify right side
    14,602.71x = 167,563,264.70
  5. Step 5: Solve for x
    x = 167,563,264.70/14,602.71
  6. Step 6: Final answer
    x = 11,474.81

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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.