Home / 19,711.36-29,568.64-9,840.64

Finding the Fourth Proportional to 19,711.36, 29,568.64 and 9,840.64

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Solution

The fourth proportional to 19,711.36, 29,568.64 and 9,840.64 is: 14,761.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,711.36 : 29,568.64 = 9,840.64 : x
  2. Step 2: Convert to fraction form
    19,711.36/29,568.64 = 9,840.64/x
  3. Step 3: Cross multiply
    19,711.36x = 29,568.64 × 9,840.64
  4. Step 4: Simplify right side
    19,711.36x = 290,974,341.53
  5. Step 5: Solve for x
    x = 290,974,341.53/19,711.36
  6. Step 6: Final answer
    x = 14,761.76

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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.