Home / 13,900.92-19,182.22-7,931.40

Finding the Fourth Proportional to 13,900.92, 19,182.22 and 7,931.40

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Solution

The fourth proportional to 13,900.92, 19,182.22 and 7,931.40 is: 10,944.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,900.92 : 19,182.22 = 7,931.40 : x
  2. Step 2: Convert to fraction form
    13,900.92/19,182.22 = 7,931.40/x
  3. Step 3: Cross multiply
    13,900.92x = 19,182.22 × 7,931.40
  4. Step 4: Simplify right side
    13,900.92x = 152,141,859.71
  5. Step 5: Solve for x
    x = 152,141,859.71/13,900.92
  6. Step 6: Final answer
    x = 10,944.73

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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.