Home / 28,415.45-42,613.81-9,435.71

Finding the Fourth Proportional to 28,415.45, 42,613.81 and 9,435.71

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Solution

The fourth proportional to 28,415.45, 42,613.81 and 9,435.71 is: 14,150.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,415.45 : 42,613.81 = 9,435.71 : x
  2. Step 2: Convert to fraction form
    28,415.45/42,613.81 = 9,435.71/x
  3. Step 3: Cross multiply
    28,415.45x = 42,613.81 × 9,435.71
  4. Step 4: Simplify right side
    28,415.45x = 402,091,553.16
  5. Step 5: Solve for x
    x = 402,091,553.16/28,415.45
  6. Step 6: Final answer
    x = 14,150.46

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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.