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Finding the Fourth Proportional to 21,653.48, 32,465.82 and 7,800.68

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Solution

The fourth proportional to 21,653.48, 32,465.82 and 7,800.68 is: 11,695.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,653.48 : 32,465.82 = 7,800.68 : x
  2. Step 2: Convert to fraction form
    21,653.48/32,465.82 = 7,800.68/x
  3. Step 3: Cross multiply
    21,653.48x = 32,465.82 × 7,800.68
  4. Step 4: Simplify right side
    21,653.48x = 253,255,472.76
  5. Step 5: Solve for x
    x = 253,255,472.76/21,653.48
  6. Step 6: Final answer
    x = 11,695.83

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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.