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Finding the Fourth Proportional to 14,604.66, 20,154.45 and 7,890.29

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Solution

The fourth proportional to 14,604.66, 20,154.45 and 7,890.29 is: 10,888.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,604.66 : 20,154.45 = 7,890.29 : x
  2. Step 2: Convert to fraction form
    14,604.66/20,154.45 = 7,890.29/x
  3. Step 3: Cross multiply
    14,604.66x = 20,154.45 × 7,890.29
  4. Step 4: Simplify right side
    14,604.66x = 159,024,374.22
  5. Step 5: Solve for x
    x = 159,024,374.22/14,604.66
  6. Step 6: Final answer
    x = 10,888.60

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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.