Home / 28,353.34-39,062.10-20,381.77

Finding the Fourth Proportional to 28,353.34, 39,062.10 and 20,381.77

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Solution

The fourth proportional to 28,353.34, 39,062.10 and 20,381.77 is: 28,079.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,353.34 : 39,062.10 = 20,381.77 : x
  2. Step 2: Convert to fraction form
    28,353.34/39,062.10 = 20,381.77/x
  3. Step 3: Cross multiply
    28,353.34x = 39,062.10 × 20,381.77
  4. Step 4: Simplify right side
    28,353.34x = 796,154,737.92
  5. Step 5: Solve for x
    x = 796,154,737.92/28,353.34
  6. Step 6: Final answer
    x = 28,079.75

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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.