Home / 26,420.47-39,635.88-9,780.64

Finding the Fourth Proportional to 26,420.47, 39,635.88 and 9,780.64

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Solution

The fourth proportional to 26,420.47, 39,635.88 and 9,780.64 is: 14,672.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,420.47 : 39,635.88 = 9,780.64 : x
  2. Step 2: Convert to fraction form
    26,420.47/39,635.88 = 9,780.64/x
  3. Step 3: Cross multiply
    26,420.47x = 39,635.88 × 9,780.64
  4. Step 4: Simplify right side
    26,420.47x = 387,664,273.36
  5. Step 5: Solve for x
    x = 387,664,273.36/26,420.47
  6. Step 6: Final answer
    x = 14,672.88

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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.