Home / 28,719.16-39,632.09-16,143.91

Finding the Fourth Proportional to 28,719.16, 39,632.09 and 16,143.91

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Solution

The fourth proportional to 28,719.16, 39,632.09 and 16,143.91 is: 22,278.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,719.16 : 39,632.09 = 16,143.91 : x
  2. Step 2: Convert to fraction form
    28,719.16/39,632.09 = 16,143.91/x
  3. Step 3: Cross multiply
    28,719.16x = 39,632.09 × 16,143.91
  4. Step 4: Simplify right side
    28,719.16x = 639,816,714.27
  5. Step 5: Solve for x
    x = 639,816,714.27/28,719.16
  6. Step 6: Final answer
    x = 22,278.39

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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.