Home / 28,823.53-39,785.34-16,890.72

Finding the Fourth Proportional to 28,823.53, 39,785.34 and 16,890.72

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Solution

The fourth proportional to 28,823.53, 39,785.34 and 16,890.72 is: 23,314.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,823.53 : 39,785.34 = 16,890.72 : x
  2. Step 2: Convert to fraction form
    28,823.53/39,785.34 = 16,890.72/x
  3. Step 3: Cross multiply
    28,823.53x = 39,785.34 × 16,890.72
  4. Step 4: Simplify right side
    28,823.53x = 672,003,038.04
  5. Step 5: Solve for x
    x = 672,003,038.04/28,823.53
  6. Step 6: Final answer
    x = 23,314.39

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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.