Home / 28,823.69-39,785.57-16,890.91

Finding the Fourth Proportional to 28,823.69, 39,785.57 and 16,890.91

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Solution

The fourth proportional to 28,823.69, 39,785.57 and 16,890.91 is: 23,314.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,823.69 : 39,785.57 = 16,890.91 : x
  2. Step 2: Convert to fraction form
    28,823.69/39,785.57 = 16,890.91/x
  3. Step 3: Cross multiply
    28,823.69x = 39,785.57 × 16,890.91
  4. Step 4: Simplify right side
    28,823.69x = 672,014,482.17
  5. Step 5: Solve for x
    x = 672,014,482.17/28,823.69
  6. Step 6: Final answer
    x = 23,314.66

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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.