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Finding the Fourth Proportional to 18,776.66, 25,913.03 and 10,819.39

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Solution

The fourth proportional to 18,776.66, 25,913.03 and 10,819.39 is: 14,931.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,776.66 : 25,913.03 = 10,819.39 : x
  2. Step 2: Convert to fraction form
    18,776.66/25,913.03 = 10,819.39/x
  3. Step 3: Cross multiply
    18,776.66x = 25,913.03 × 10,819.39
  4. Step 4: Simplify right side
    18,776.66x = 280,363,058.77
  5. Step 5: Solve for x
    x = 280,363,058.77/18,776.66
  6. Step 6: Final answer
    x = 14,931.47

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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.