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Finding the Fourth Proportional to 14,280.66, 21,429.86 and 6,885.88

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Solution

The fourth proportional to 14,280.66, 21,429.86 and 6,885.88 is: 10,333.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,280.66 : 21,429.86 = 6,885.88 : x
  2. Step 2: Convert to fraction form
    14,280.66/21,429.86 = 6,885.88/x
  3. Step 3: Cross multiply
    14,280.66x = 21,429.86 × 6,885.88
  4. Step 4: Simplify right side
    14,280.66x = 147,563,444.38
  5. Step 5: Solve for x
    x = 147,563,444.38/14,280.66
  6. Step 6: Final answer
    x = 10,333.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.