Home / 31,177.80-46,715.40-18,007.20

Finding the Fourth Proportional to 31,177.80, 46,715.40 and 18,007.20

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Solution

The fourth proportional to 31,177.80, 46,715.40 and 18,007.20 is: 26,981.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,177.80 : 46,715.40 = 18,007.20 : x
  2. Step 2: Convert to fraction form
    31,177.80/46,715.40 = 18,007.20/x
  3. Step 3: Cross multiply
    31,177.80x = 46,715.40 × 18,007.20
  4. Step 4: Simplify right side
    31,177.80x = 841,213,550.88
  5. Step 5: Solve for x
    x = 841,213,550.88/31,177.80
  6. Step 6: Final answer
    x = 26,981.17

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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.