Home / 15,715.42-21,554.40-13,943.95

Finding the Fourth Proportional to 15,715.42, 21,554.40 and 13,943.95

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Solution

The fourth proportional to 15,715.42, 21,554.40 and 13,943.95 is: 19,124.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,715.42 : 21,554.40 = 13,943.95 : x
  2. Step 2: Convert to fraction form
    15,715.42/21,554.40 = 13,943.95/x
  3. Step 3: Cross multiply
    15,715.42x = 21,554.40 × 13,943.95
  4. Step 4: Simplify right side
    15,715.42x = 300,553,474.28
  5. Step 5: Solve for x
    x = 300,553,474.28/15,715.42
  6. Step 6: Final answer
    x = 19,124.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.