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Finding the Fourth Proportional to 14,276.55, 19,703.91 and 8,612.12

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Solution

The fourth proportional to 14,276.55, 19,703.91 and 8,612.12 is: 11,886.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,276.55 : 19,703.91 = 8,612.12 : x
  2. Step 2: Convert to fraction form
    14,276.55/19,703.91 = 8,612.12/x
  3. Step 3: Cross multiply
    14,276.55x = 19,703.91 × 8,612.12
  4. Step 4: Simplify right side
    14,276.55x = 169,692,408.11
  5. Step 5: Solve for x
    x = 169,692,408.11/14,276.55
  6. Step 6: Final answer
    x = 11,886.09

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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.