Home / 14,006.80-21,006.15-5,121.10

Finding the Fourth Proportional to 14,006.80, 21,006.15 and 5,121.10

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Solution

The fourth proportional to 14,006.80, 21,006.15 and 5,121.10 is: 7,680.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,006.80 : 21,006.15 = 5,121.10 : x
  2. Step 2: Convert to fraction form
    14,006.80/21,006.15 = 5,121.10/x
  3. Step 3: Cross multiply
    14,006.80x = 21,006.15 × 5,121.10
  4. Step 4: Simplify right side
    14,006.80x = 107,574,594.77
  5. Step 5: Solve for x
    x = 107,574,594.77/14,006.80
  6. Step 6: Final answer
    x = 7,680.17

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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.