Home / 21,595.61-29,799.90-15,933.51

Finding the Fourth Proportional to 21,595.61, 29,799.90 and 15,933.51

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Solution

The fourth proportional to 21,595.61, 29,799.90 and 15,933.51 is: 21,986.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,595.61 : 29,799.90 = 15,933.51 : x
  2. Step 2: Convert to fraction form
    21,595.61/29,799.90 = 15,933.51/x
  3. Step 3: Cross multiply
    21,595.61x = 29,799.90 × 15,933.51
  4. Step 4: Simplify right side
    21,595.61x = 474,817,004.65
  5. Step 5: Solve for x
    x = 474,817,004.65/21,595.61
  6. Step 6: Final answer
    x = 21,986.73

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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.