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Finding the Fourth Proportional to 12,801.10, 19,216.05 and 9,892.30

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Solution

The fourth proportional to 12,801.10, 19,216.05 and 9,892.30 is: 14,849.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,801.10 : 19,216.05 = 9,892.30 : x
  2. Step 2: Convert to fraction form
    12,801.10/19,216.05 = 9,892.30/x
  3. Step 3: Cross multiply
    12,801.10x = 19,216.05 × 9,892.30
  4. Step 4: Simplify right side
    12,801.10x = 190,090,931.42
  5. Step 5: Solve for x
    x = 190,090,931.42/12,801.10
  6. Step 6: Final answer
    x = 14,849.58

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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.