Home / 20,337.42-28,064.32-11,384.85

Finding the Fourth Proportional to 20,337.42, 28,064.32 and 11,384.85

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Solution

The fourth proportional to 20,337.42, 28,064.32 and 11,384.85 is: 15,710.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,337.42 : 28,064.32 = 11,384.85 : x
  2. Step 2: Convert to fraction form
    20,337.42/28,064.32 = 11,384.85/x
  3. Step 3: Cross multiply
    20,337.42x = 28,064.32 × 11,384.85
  4. Step 4: Simplify right side
    20,337.42x = 319,507,933.23
  5. Step 5: Solve for x
    x = 319,507,933.23/20,337.42
  6. Step 6: Final answer
    x = 15,710.35

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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.