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Finding the Fourth Proportional to 39,995.68, 59,993.82 and 13,700.64

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Solution

The fourth proportional to 39,995.68, 59,993.82 and 13,700.64 is: 20,551.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,995.68 : 59,993.82 = 13,700.64 : x
  2. Step 2: Convert to fraction form
    39,995.68/59,993.82 = 13,700.64/x
  3. Step 3: Cross multiply
    39,995.68x = 59,993.82 × 13,700.64
  4. Step 4: Simplify right side
    39,995.68x = 821,953,730.04
  5. Step 5: Solve for x
    x = 821,953,730.04/39,995.68
  6. Step 6: Final answer
    x = 20,551.06

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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.