Home / 13,671.05-18,864.63-7,703.64

Finding the Fourth Proportional to 13,671.05, 18,864.63 and 7,703.64

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Solution

The fourth proportional to 13,671.05, 18,864.63 and 7,703.64 is: 10,630.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,671.05 : 18,864.63 = 7,703.64 : x
  2. Step 2: Convert to fraction form
    13,671.05/18,864.63 = 7,703.64/x
  3. Step 3: Cross multiply
    13,671.05x = 18,864.63 × 7,703.64
  4. Step 4: Simplify right side
    13,671.05x = 145,326,318.25
  5. Step 5: Solve for x
    x = 145,326,318.25/13,671.05
  6. Step 6: Final answer
    x = 10,630.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.