Home / 15,659.20-21,597.33-13,868.56

Finding the Fourth Proportional to 15,659.20, 21,597.33 and 13,868.56

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Solution

The fourth proportional to 15,659.20, 21,597.33 and 13,868.56 is: 19,127.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,659.20 : 21,597.33 = 13,868.56 : x
  2. Step 2: Convert to fraction form
    15,659.20/21,597.33 = 13,868.56/x
  3. Step 3: Cross multiply
    15,659.20x = 21,597.33 × 13,868.56
  4. Step 4: Simplify right side
    15,659.20x = 299,523,866.94
  5. Step 5: Solve for x
    x = 299,523,866.94/15,659.20
  6. Step 6: Final answer
    x = 19,127.66

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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.