Home / 15,243.93-21,036.71-8,529.57

Finding the Fourth Proportional to 15,243.93, 21,036.71 and 8,529.57

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Solution

The fourth proportional to 15,243.93, 21,036.71 and 8,529.57 is: 11,770.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,243.93 : 21,036.71 = 8,529.57 : x
  2. Step 2: Convert to fraction form
    15,243.93/21,036.71 = 8,529.57/x
  3. Step 3: Cross multiply
    15,243.93x = 21,036.71 × 8,529.57
  4. Step 4: Simplify right side
    15,243.93x = 179,434,047.87
  5. Step 5: Solve for x
    x = 179,434,047.87/15,243.93
  6. Step 6: Final answer
    x = 11,770.85

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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.