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Finding the Fourth Proportional to 14,772.77, 20,389.69 and 9,394.14

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Solution

The fourth proportional to 14,772.77, 20,389.69 and 9,394.14 is: 12,965.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,772.77 : 20,389.69 = 9,394.14 : x
  2. Step 2: Convert to fraction form
    14,772.77/20,389.69 = 9,394.14/x
  3. Step 3: Cross multiply
    14,772.77x = 20,389.69 × 9,394.14
  4. Step 4: Simplify right side
    14,772.77x = 191,543,602.42
  5. Step 5: Solve for x
    x = 191,543,602.42/14,772.77
  6. Step 6: Final answer
    x = 12,965.99

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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.