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Finding the Fourth Proportional to 32,807.58, 45,251.12 and 21,900.21

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Solution

The fourth proportional to 32,807.58, 45,251.12 and 21,900.21 is: 30,206.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,807.58 : 45,251.12 = 21,900.21 : x
  2. Step 2: Convert to fraction form
    32,807.58/45,251.12 = 21,900.21/x
  3. Step 3: Cross multiply
    32,807.58x = 45,251.12 × 21,900.21
  4. Step 4: Simplify right side
    32,807.58x = 991,009,030.74
  5. Step 5: Solve for x
    x = 991,009,030.74/32,807.58
  6. Step 6: Final answer
    x = 30,206.71

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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.