Home / 21,038.35-31,527.45-15,447.83

Finding the Fourth Proportional to 21,038.35, 31,527.45 and 15,447.83

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Solution

The fourth proportional to 21,038.35, 31,527.45 and 15,447.83 is: 23,149.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,038.35 : 31,527.45 = 15,447.83 : x
  2. Step 2: Convert to fraction form
    21,038.35/31,527.45 = 15,447.83/x
  3. Step 3: Cross multiply
    21,038.35x = 31,527.45 × 15,447.83
  4. Step 4: Simplify right side
    21,038.35x = 487,030,687.93
  5. Step 5: Solve for x
    x = 487,030,687.93/21,038.35
  6. Step 6: Final answer
    x = 23,149.66

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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.