Home / 21,808.72-30,065.80-14,723.92

Finding the Fourth Proportional to 21,808.72, 30,065.80 and 14,723.92

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Solution

The fourth proportional to 21,808.72, 30,065.80 and 14,723.92 is: 20,298.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,808.72 : 30,065.80 = 14,723.92 : x
  2. Step 2: Convert to fraction form
    21,808.72/30,065.80 = 14,723.92/x
  3. Step 3: Cross multiply
    21,808.72x = 30,065.80 × 14,723.92
  4. Step 4: Simplify right side
    21,808.72x = 442,686,433.94
  5. Step 5: Solve for x
    x = 442,686,433.94/21,808.72
  6. Step 6: Final answer
    x = 20,298.60

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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.