Home / 12,477.13-18,723.72-4,979.40

Finding the Fourth Proportional to 12,477.13, 18,723.72 and 4,979.40

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Solution

The fourth proportional to 12,477.13, 18,723.72 and 4,979.40 is: 7,472.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,477.13 : 18,723.72 = 4,979.40 : x
  2. Step 2: Convert to fraction form
    12,477.13/18,723.72 = 4,979.40/x
  3. Step 3: Cross multiply
    12,477.13x = 18,723.72 × 4,979.40
  4. Step 4: Simplify right side
    12,477.13x = 93,232,866.47
  5. Step 5: Solve for x
    x = 93,232,866.47/12,477.13
  6. Step 6: Final answer
    x = 7,472.30

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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.