Home / 31,145.27-46,780.79-18,688.95

Finding the Fourth Proportional to 31,145.27, 46,780.79 and 18,688.95

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Solution

The fourth proportional to 31,145.27, 46,780.79 and 18,688.95 is: 28,071.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,145.27 : 46,780.79 = 18,688.95 : x
  2. Step 2: Convert to fraction form
    31,145.27/46,780.79 = 18,688.95/x
  3. Step 3: Cross multiply
    31,145.27x = 46,780.79 × 18,688.95
  4. Step 4: Simplify right side
    31,145.27x = 874,283,751.83
  5. Step 5: Solve for x
    x = 874,283,751.83/31,145.27
  6. Step 6: Final answer
    x = 28,071.16

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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.