Home / 31,126.50-42,954.57-19,948.50

Finding the Fourth Proportional to 31,126.50, 42,954.57 and 19,948.50

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Solution

The fourth proportional to 31,126.50, 42,954.57 and 19,948.50 is: 27,528.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,126.50 : 42,954.57 = 19,948.50 : x
  2. Step 2: Convert to fraction form
    31,126.50/42,954.57 = 19,948.50/x
  3. Step 3: Cross multiply
    31,126.50x = 42,954.57 × 19,948.50
  4. Step 4: Simplify right side
    31,126.50x = 856,879,239.65
  5. Step 5: Solve for x
    x = 856,879,239.65/31,126.50
  6. Step 6: Final answer
    x = 27,528.93

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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.