Home / 42,850.85-64,287.12-12,864.92

Finding the Fourth Proportional to 42,850.85, 64,287.12 and 12,864.92

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Solution

The fourth proportional to 42,850.85, 64,287.12 and 12,864.92 is: 19,300.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,850.85 : 64,287.12 = 12,864.92 : x
  2. Step 2: Convert to fraction form
    42,850.85/64,287.12 = 12,864.92/x
  3. Step 3: Cross multiply
    42,850.85x = 64,287.12 × 12,864.92
  4. Step 4: Simplify right side
    42,850.85x = 827,048,334.39
  5. Step 5: Solve for x
    x = 827,048,334.39/42,850.85
  6. Step 6: Final answer
    x = 19,300.63

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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.