Home / 28,864.80-43,302.24-9,139.68

Finding the Fourth Proportional to 28,864.80, 43,302.24 and 9,139.68

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Solution

The fourth proportional to 28,864.80, 43,302.24 and 9,139.68 is: 13,711.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,864.80 : 43,302.24 = 9,139.68 : x
  2. Step 2: Convert to fraction form
    28,864.80/43,302.24 = 9,139.68/x
  3. Step 3: Cross multiply
    28,864.80x = 43,302.24 × 9,139.68
  4. Step 4: Simplify right side
    28,864.80x = 395,768,616.88
  5. Step 5: Solve for x
    x = 395,768,616.88/28,864.80
  6. Step 6: Final answer
    x = 13,711.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.