Home / 13,923.17-19,215.11-7,956.71

Finding the Fourth Proportional to 13,923.17, 19,215.11 and 7,956.71

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Solution

The fourth proportional to 13,923.17, 19,215.11 and 7,956.71 is: 10,980.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,923.17 : 19,215.11 = 7,956.71 : x
  2. Step 2: Convert to fraction form
    13,923.17/19,215.11 = 7,956.71/x
  3. Step 3: Cross multiply
    13,923.17x = 19,215.11 × 7,956.71
  4. Step 4: Simplify right side
    13,923.17x = 152,888,981.70
  5. Step 5: Solve for x
    x = 152,888,981.70/13,923.17
  6. Step 6: Final answer
    x = 10,980.91

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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.