Home / 14,690.25-20,272.55-8,402.63

Finding the Fourth Proportional to 14,690.25, 20,272.55 and 8,402.63

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Solution

The fourth proportional to 14,690.25, 20,272.55 and 8,402.63 is: 11,595.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,690.25 : 20,272.55 = 8,402.63 : x
  2. Step 2: Convert to fraction form
    14,690.25/20,272.55 = 8,402.63/x
  3. Step 3: Cross multiply
    14,690.25x = 20,272.55 × 8,402.63
  4. Step 4: Simplify right side
    14,690.25x = 170,342,736.81
  5. Step 5: Solve for x
    x = 170,342,736.81/14,690.25
  6. Step 6: Final answer
    x = 11,595.63

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Double scale
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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.