Home / 28,953.28-39,953.82-18,900.64

Finding the Fourth Proportional to 28,953.28, 39,953.82 and 18,900.64

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Solution

The fourth proportional to 28,953.28, 39,953.82 and 18,900.64 is: 26,081.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,953.28 : 39,953.82 = 18,900.64 : x
  2. Step 2: Convert to fraction form
    28,953.28/39,953.82 = 18,900.64/x
  3. Step 3: Cross multiply
    28,953.28x = 39,953.82 × 18,900.64
  4. Step 4: Simplify right side
    28,953.28x = 755,152,768.44
  5. Step 5: Solve for x
    x = 755,152,768.44/28,953.28
  6. Step 6: Final answer
    x = 26,081.77

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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.