Home / 13,993.76-20,938.80-10,298.72

Finding the Fourth Proportional to 13,993.76, 20,938.80 and 10,298.72

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Solution

The fourth proportional to 13,993.76, 20,938.80 and 10,298.72 is: 15,409.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,993.76 : 20,938.80 = 10,298.72 : x
  2. Step 2: Convert to fraction form
    13,993.76/20,938.80 = 10,298.72/x
  3. Step 3: Cross multiply
    13,993.76x = 20,938.80 × 10,298.72
  4. Step 4: Simplify right side
    13,993.76x = 215,642,838.34
  5. Step 5: Solve for x
    x = 215,642,838.34/13,993.76
  6. Step 6: Final answer
    x = 15,409.93

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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.