Home / 13,981.68-19,278.72-10,438.92

Finding the Fourth Proportional to 13,981.68, 19,278.72 and 10,438.92

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Solution

The fourth proportional to 13,981.68, 19,278.72 and 10,438.92 is: 14,393.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,981.68 : 19,278.72 = 10,438.92 : x
  2. Step 2: Convert to fraction form
    13,981.68/19,278.72 = 10,438.92/x
  3. Step 3: Cross multiply
    13,981.68x = 19,278.72 × 10,438.92
  4. Step 4: Simplify right side
    13,981.68x = 201,249,015.78
  5. Step 5: Solve for x
    x = 201,249,015.78/13,981.68
  6. Step 6: Final answer
    x = 14,393.76

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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.