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Finding the Fourth Proportional to 14,256.80, 19,672.02 and 8,287.10

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Solution

The fourth proportional to 14,256.80, 19,672.02 and 8,287.10 is: 11,434.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,256.80 : 19,672.02 = 8,287.10 : x
  2. Step 2: Convert to fraction form
    14,256.80/19,672.02 = 8,287.10/x
  3. Step 3: Cross multiply
    14,256.80x = 19,672.02 × 8,287.10
  4. Step 4: Simplify right side
    14,256.80x = 163,023,996.94
  5. Step 5: Solve for x
    x = 163,023,996.94/14,256.80
  6. Step 6: Final answer
    x = 11,434.82

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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.