Home / 15,295.56-21,100.10-9,993.48

Finding the Fourth Proportional to 15,295.56, 21,100.10 and 9,993.48

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Solution

The fourth proportional to 15,295.56, 21,100.10 and 9,993.48 is: 13,785.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,295.56 : 21,100.10 = 9,993.48 : x
  2. Step 2: Convert to fraction form
    15,295.56/21,100.10 = 9,993.48/x
  3. Step 3: Cross multiply
    15,295.56x = 21,100.10 × 9,993.48
  4. Step 4: Simplify right side
    15,295.56x = 210,863,427.35
  5. Step 5: Solve for x
    x = 210,863,427.35/15,295.56
  6. Step 6: Final answer
    x = 13,785.92

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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.