Home / 31,068.24-42,879.73-18,320.65

Finding the Fourth Proportional to 31,068.24, 42,879.73 and 18,320.65

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Solution

The fourth proportional to 31,068.24, 42,879.73 and 18,320.65 is: 25,285.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,068.24 : 42,879.73 = 18,320.65 : x
  2. Step 2: Convert to fraction form
    31,068.24/42,879.73 = 18,320.65/x
  3. Step 3: Cross multiply
    31,068.24x = 42,879.73 × 18,320.65
  4. Step 4: Simplify right side
    31,068.24x = 785,584,372.42
  5. Step 5: Solve for x
    x = 785,584,372.42/31,068.24
  6. Step 6: Final answer
    x = 25,285.77

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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.