Home / 14,121.81-19,488.20-7,834.19

Finding the Fourth Proportional to 14,121.81, 19,488.20 and 7,834.19

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Solution

The fourth proportional to 14,121.81, 19,488.20 and 7,834.19 is: 10,811.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,121.81 : 19,488.20 = 7,834.19 : x
  2. Step 2: Convert to fraction form
    14,121.81/19,488.20 = 7,834.19/x
  3. Step 3: Cross multiply
    14,121.81x = 19,488.20 × 7,834.19
  4. Step 4: Simplify right side
    14,121.81x = 152,674,124.95
  5. Step 5: Solve for x
    x = 152,674,124.95/14,121.81
  6. Step 6: Final answer
    x = 10,811.23

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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.