Home / 14,654.79-20,222.28-8,685.49

Finding the Fourth Proportional to 14,654.79, 20,222.28 and 8,685.49

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Solution

The fourth proportional to 14,654.79, 20,222.28 and 8,685.49 is: 11,985.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,654.79 : 20,222.28 = 8,685.49 : x
  2. Step 2: Convert to fraction form
    14,654.79/20,222.28 = 8,685.49/x
  3. Step 3: Cross multiply
    14,654.79x = 20,222.28 × 8,685.49
  4. Step 4: Simplify right side
    14,654.79x = 175,640,410.72
  5. Step 5: Solve for x
    x = 175,640,410.72/14,654.79
  6. Step 6: Final answer
    x = 11,985.19

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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.