Home / 28,143.04-42,235.32-13,351.92

Finding the Fourth Proportional to 28,143.04, 42,235.32 and 13,351.92

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Solution

The fourth proportional to 28,143.04, 42,235.32 and 13,351.92 is: 20,037.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,143.04 : 42,235.32 = 13,351.92 : x
  2. Step 2: Convert to fraction form
    28,143.04/42,235.32 = 13,351.92/x
  3. Step 3: Cross multiply
    28,143.04x = 42,235.32 × 13,351.92
  4. Step 4: Simplify right side
    28,143.04x = 563,922,613.81
  5. Step 5: Solve for x
    x = 563,922,613.81/28,143.04
  6. Step 6: Final answer
    x = 20,037.73

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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.