Home / 31,655.91-47,482.96-12,930.64

Finding the Fourth Proportional to 31,655.91, 47,482.96 and 12,930.64

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Solution

The fourth proportional to 31,655.91, 47,482.96 and 12,930.64 is: 19,395.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,655.91 : 47,482.96 = 12,930.64 : x
  2. Step 2: Convert to fraction form
    31,655.91/47,482.96 = 12,930.64/x
  3. Step 3: Cross multiply
    31,655.91x = 47,482.96 × 12,930.64
  4. Step 4: Simplify right side
    31,655.91x = 613,984,935.11
  5. Step 5: Solve for x
    x = 613,984,935.11/31,655.91
  6. Step 6: Final answer
    x = 19,395.58

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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.