Home / 28,857.12-39,823.86-16,756.71

Finding the Fourth Proportional to 28,857.12, 39,823.86 and 16,756.71

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Solution

The fourth proportional to 28,857.12, 39,823.86 and 16,756.71 is: 23,124.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,857.12 : 39,823.86 = 16,756.71 : x
  2. Step 2: Convert to fraction form
    28,857.12/39,823.86 = 16,756.71/x
  3. Step 3: Cross multiply
    28,857.12x = 39,823.86 × 16,756.71
  4. Step 4: Simplify right side
    28,857.12x = 667,316,873.10
  5. Step 5: Solve for x
    x = 667,316,873.10/28,857.12
  6. Step 6: Final answer
    x = 23,124.86

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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.