Home / 21,900.32-32,871.23-13,555.09

Finding the Fourth Proportional to 21,900.32, 32,871.23 and 13,555.09

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Solution

The fourth proportional to 21,900.32, 32,871.23 and 13,555.09 is: 20,345.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,900.32 : 32,871.23 = 13,555.09 : x
  2. Step 2: Convert to fraction form
    21,900.32/32,871.23 = 13,555.09/x
  3. Step 3: Cross multiply
    21,900.32x = 32,871.23 × 13,555.09
  4. Step 4: Simplify right side
    21,900.32x = 445,572,248.93
  5. Step 5: Solve for x
    x = 445,572,248.93/21,900.32
  6. Step 6: Final answer
    x = 20,345.47

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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.