Home / 14,080.77-19,431.42-7,620.40

Finding the Fourth Proportional to 14,080.77, 19,431.42 and 7,620.40

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Solution

The fourth proportional to 14,080.77, 19,431.42 and 7,620.40 is: 10,516.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,080.77 : 19,431.42 = 7,620.40 : x
  2. Step 2: Convert to fraction form
    14,080.77/19,431.42 = 7,620.40/x
  3. Step 3: Cross multiply
    14,080.77x = 19,431.42 × 7,620.40
  4. Step 4: Simplify right side
    14,080.77x = 148,075,144.39
  5. Step 5: Solve for x
    x = 148,075,144.39/14,080.77
  6. Step 6: Final answer
    x = 10,516.13

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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.