Home / 20,747.53-31,075.57-17,148.79

Finding the Fourth Proportional to 20,747.53, 31,075.57 and 17,148.79

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Solution

The fourth proportional to 20,747.53, 31,075.57 and 17,148.79 is: 25,685.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,747.53 : 31,075.57 = 17,148.79 : x
  2. Step 2: Convert to fraction form
    20,747.53/31,075.57 = 17,148.79/x
  3. Step 3: Cross multiply
    20,747.53x = 31,075.57 × 17,148.79
  4. Step 4: Simplify right side
    20,747.53x = 532,908,182.94
  5. Step 5: Solve for x
    x = 532,908,182.94/20,747.53
  6. Step 6: Final answer
    x = 25,685.39

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1.5x scale

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.