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Finding the Fourth Proportional to 14,477.81, 19,965.71 and 9,445.89

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Solution

The fourth proportional to 14,477.81, 19,965.71 and 9,445.89 is: 13,026.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,477.81 : 19,965.71 = 9,445.89 : x
  2. Step 2: Convert to fraction form
    14,477.81/19,965.71 = 9,445.89/x
  3. Step 3: Cross multiply
    14,477.81x = 19,965.71 × 9,445.89
  4. Step 4: Simplify right side
    14,477.81x = 188,593,924.05
  5. Step 5: Solve for x
    x = 188,593,924.05/14,477.81
  6. Step 6: Final answer
    x = 13,026.41

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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.