Home / 42,845.43-64,270.88-13,260.78

Finding the Fourth Proportional to 42,845.43, 64,270.88 and 13,260.78

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Solution

The fourth proportional to 42,845.43, 64,270.88 and 13,260.78 is: 19,892.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,845.43 : 64,270.88 = 13,260.78 : x
  2. Step 2: Convert to fraction form
    42,845.43/64,270.88 = 13,260.78/x
  3. Step 3: Cross multiply
    42,845.43x = 64,270.88 × 13,260.78
  4. Step 4: Simplify right side
    42,845.43x = 852,282,000.09
  5. Step 5: Solve for x
    x = 852,282,000.09/42,845.43
  6. Step 6: Final answer
    x = 19,892.02

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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.