Home / 28,536.72-42,802.68-9,815.76

Finding the Fourth Proportional to 28,536.72, 42,802.68 and 9,815.76

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Solution

The fourth proportional to 28,536.72, 42,802.68 and 9,815.76 is: 14,722.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,536.72 : 42,802.68 = 9,815.76 : x
  2. Step 2: Convert to fraction form
    28,536.72/42,802.68 = 9,815.76/x
  3. Step 3: Cross multiply
    28,536.72x = 42,802.68 × 9,815.76
  4. Step 4: Simplify right side
    28,536.72x = 420,140,834.24
  5. Step 5: Solve for x
    x = 420,140,834.24/28,536.72
  6. Step 6: Final answer
    x = 14,722.81

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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.