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Finding the Fourth Proportional to 21,953.77, 32,932.08 and 7,720.50

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Solution

The fourth proportional to 21,953.77, 32,932.08 and 7,720.50 is: 11,581.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,953.77 : 32,932.08 = 7,720.50 : x
  2. Step 2: Convert to fraction form
    21,953.77/32,932.08 = 7,720.50/x
  3. Step 3: Cross multiply
    21,953.77x = 32,932.08 × 7,720.50
  4. Step 4: Simplify right side
    21,953.77x = 254,252,123.64
  5. Step 5: Solve for x
    x = 254,252,123.64/21,953.77
  6. Step 6: Final answer
    x = 11,581.25

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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.